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Does PAI Reduce Pain After TKA Among Knee Arthroplasty Patients Receiving ACB & IPACK?

Does Periarticular Injection (PAI) Reduce Pain After TKA Among Knee Arthroplasty Patients Receiving Adductor Canal Block and Infiltration Between the Popliteal Artery and the Capsule of the Posterior Knee (ACB&IPACK)? A Blinded, Randomized Controlled Trial.

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04749615
Enrollment
94
Registered
2021-02-11
Start date
2020-12-17
Completion date
2022-07-01
Last updated
2024-12-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Total Knee Athroplasty

Keywords

TKA, PAI, ACB, IPACK, Knee Arthroplasty

Brief summary

The goal of this clinical trial is to determine whether Periarticular Injection (PAI) alongside Adductor Canal Block (ACB) and Infiltration between the Popliteal Artery and Capsule of the Knee (IPACK) block can decrease post-operative pain in patients undergoing primary total knee arthroplasty. The main question it aims to answer is: • Is ACB/IPACK without PAI as effective as ACB/IPACK with PAI for TKA patients? Participants will be assigned to one of the following groups at random: * ACB/PACK with PAI * ACB/IPACK with saline injection Participants will also be asked to complete pre- and post-operative questionnaires.

Detailed description

Kim et al (2019) have shown that addition of ACB/IPACK to PAI improves analgesic outcomes (the nerve blocks reduced pain with ambulation and reduced opioid consumption). TKA patients receiving PAI + ACB/IPACK (along with a comprehensive multimodal analgesic program) had low pain scores with ambulation on POD1: 1.7 +/- 1.4 (mean +/- SD, NRS, 0-10 scale). The opioid consumption in the first 24 hours was 40.6 +/- 32.1 (mg oral morphine equivalents). It is not clear if the PAI component is necessary, given the theoretically nearly complete analgesic effects of the ACB/IPACK block. Additionally, anecdotal evidence indicates that some surgeons at HSS routinely use the PAI and some do not, without obvious large differences in analgesic outcomes. While there may be a 'belt and suspenders' advantage to using PAI in addition to ACB/IPACK, it is not desirable to perform unnecessary procedures. In this study, we seek to compare the efficacy of ACB/IPACK with and without PAI in TKA patients.

Interventions

PAI is a widely-utilized, surgeon-performed, analgesic intervention for TKA patients.

DRUGSaline Control Periarticular Injection (PAI)

equal volume of saline will be used in place of analgesics used in PAI injections

Sponsors

Hospital for Special Surgery, New York
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
25 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* Planned use of regional anesthesia * Ability to follow the major components of the study protocol * English speaking (Secondary outcomes include questionnaires validated in English only)

Exclusion criteria

* Patients younger than 25 years old and older than 80 * Non-English speaking * Patients intending to receive general anesthesia * Contraindication to nerve blocks or peri-articular injection * Patients with an ASA of IV or higher * Renal insufficiency (ESRD, HD, estimated creatinine clearance \< 30 ml/min) * Patients with major prior ipsilateral open knee surgery * Chronic gabapentin/pregabalin use (regular use for longer than 3 months) * Chronic opioid use (taking opioids for longer than 3 months)

Design outcomes

Primary

MeasureTime frameDescription
Pain Scores (NRS, 0-10) With Ambulation on POD124 hours Post Operative DischargeThe NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will be asked on post operative discharge day 1.

Secondary

MeasureTime frameDescription
NRS Pain With Movementpre-operation, in the post anesthesia care unit (PACU), at post operative (POD) 1, POD 2, and POD 3 monthsThe NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will focus on pain during movement and will be asked at pre-operation, in the post anesthesia care unit (PACU), at post operative (POD) 1, POD 2, and POD 3 months.
Numerical Rating Scale (NRS) Pain Score at Restfrom pre-operation, post anesthesia care unit (PACU), post operative day (POD) 1, POD 2, and POD 3 monthsThe NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will focus on pain without movement involved and will be asked at pre-operation, post anesthesia care unit (PACU), post operative day (POD) 1, POD 2, and POD 3 months
PAIN OUT Questionnaire at Preoperationat preoperationThe PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.
Quality of Recovery (POD1)24 hours post surgical discharge.Quality of Recovery (QoR-9), This questionnaire has three options for scale (not at all, some of the time, most of the time). The QoR-9 is a nine-item scale. Total QoR-9-scores range from 0 to 18, with higher scores indicating good recovery after anaesthesia. The questions focus on the overall well being of the patient. The questionnaire will be asked 24 hours post surgical discharge.
Side Effects: Opioid-Related Symptom Distress Score (POD1)24 hours (POD 1) post surgical discharge.The Opioid-related symptom distress scale evaluates frequency, severity, bothersomeness for 12 symptoms. Each symptom is scored on a 4-point scale, with 0 meaning better outcome and 4 meaning worst outcome. The questionnaire will be asked 24 hours (POD 1) post surgical discharge.
Satisfaction With Pain Management (POD1)24 hours post operative discharge.This questionnaire is a numeric scale from 0 (strongly dissatisfied) to 10 ( strongly satisfied). A higher number dictates a better outcome. This will be asked 24 hours post operative discharge.
Blinding Assessment; Bang Question (POD1)24 hours post operative dischargeThere is no numeric scale for this questionnaire. It focuses on asking the subjects and the research assistant, which group they believe the subject were randomized to. This will be asked 24 hours post operative discharge.
Douleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 MonthsPre operative, 3 months post operative discharge.The DN4 ( Douleur Neuropathique en 4 Questions) is a Yes/No questionnaire aimed at uncovering neuropathic pain symptoms. Each question is scored as yes or no, with yes = 1 point and no = 0 points. Total score is calculated by summing the total of the individual question scores, for a total score range of 0-10, with a score of greater than or equal to 4 indicating the patient may be suffering from neuropathic pain. The average score across all participants is calculated and reported for each time point.
Opioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post surgical discharge, 24 hours post surgical discharge, 48 hours post surgical discharge, 2 weeks post surgical discharge, and 3 months post surgical discharge.Cumulative opioid consumption in morphine equivalents will be recorded post surgical discharge, 24h post surgical discharge, 48 hours post surgical discharge, 2 weeks post surgical discharge, and 3 months post surgical discharge.
PAIN OUT Questionnaire at Post Operative Day (POD) 1at post operative day (POD) 1The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.
PAIN OUT Questionnaire at Post Operative Day (POD) 14at post operative day (POD) 14The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.
PAIN OUT Questionnaire at Post Operative Day (POD) 90at post operative day (POD) 90The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.
PAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain Reliefat preoperationThe PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.
PAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain Reliefat post operative day (POD) 1The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.
PAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain Reliefat post operative day (POD) 14The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.
PAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain Reliefat post operative day (POD) 90The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.
Knee Injury and Osteoarthritis Outcome Score for Joint Replacementpreoperatively, 6 weeks post operative discharge, 3 months post operative dischargeThe standard Knee injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS Jr.) questionnaire will be asked to evaluate orthopedic outcomes. The KOOS, JR contains 7 items from the original KOOS survey. Items are coded from 0 to 4, none to extreme respectively. KOOS, JR is scored by summing the raw response (range 0-28) and then converting it to an interval score. The interval score ranges from 0 to 100 where 0 represents total knee disability and 100 represents perfect knee health. The questionnaire will be asked preoperatively, 6 weeks post operative discharge, 3 months post operative discharge.

Countries

United States

Participant flow

Participants by arm

ArmCount
No PAI + ACB & IPACK
Control: saline injection (same injection technique and volumes as described for the active intervention, of normal saline) Saline Control Periarticular Injection (PAI): equal volume of saline will be used in place of analgesics used in PAI injections
47
PAI + ACB & IPACK
Active intervention: Periarticular injection: one deep injection prior to cementation and then a second more superficial injection prior to closure. The deep injection will consist of bupivacaine 0.25% with 1:200,000 epinephrine, 30 cc; morphine, 8 mg/ml, 1cc; methylprednisolone, 40 mg/ml, 1 ml; cefazolin, 500 in 10 ml; normal saline, 22cc. The superficial injection will be 20 ml 0.25% bupivacaine Periarticular Injection (PAI): PAI is a widely-utilized, surgeon-performed, analgesic intervention for TKA patients.
47
Total94

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up610

Baseline characteristics

CharacteristicTotalPAI + ACB & IPACKNo PAI + ACB & IPACK
Age, Continuous66 years
STANDARD_DEVIATION 6
66 years
STANDARD_DEVIATION 7
67 years
STANDARD_DEVIATION 6
American Society of Anesthesiologists Status
ASA 1
6 Participants1 Participants5 Participants
American Society of Anesthesiologists Status
ASA 2
85 Participants46 Participants39 Participants
American Society of Anesthesiologists Status
ASA 3
3 Participants0 Participants3 Participants
Body Mass Index30 kg/m^2
STANDARD_DEVIATION 4
31 kg/m^2
STANDARD_DEVIATION 4
30 kg/m^2
STANDARD_DEVIATION 3
Ethnicity (NIH/OMB)
Hispanic or Latino
11 Participants8 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
83 Participants39 Participants44 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
10 Participants4 Participants6 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants1 Participants1 Participants
Race (NIH/OMB)
White
81 Participants42 Participants39 Participants
Sex: Female, Male
Female
43 Participants22 Participants21 Participants
Sex: Female, Male
Male
51 Participants25 Participants26 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 470 / 47
other
Total, other adverse events
0 / 470 / 47
serious
Total, serious adverse events
1 / 472 / 47

Outcome results

Primary

Pain Scores (NRS, 0-10) With Ambulation on POD1

The NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will be asked on post operative discharge day 1.

Time frame: 24 hours Post Operative Discharge

ArmMeasureValue (MEAN)Dispersion
No PAI + ACB & IPACKPain Scores (NRS, 0-10) With Ambulation on POD14.55 units on a scaleStandard Deviation 2.7
PAI + ACB & IPACKPain Scores (NRS, 0-10) With Ambulation on POD14.26 units on a scaleStandard Deviation 3.03
p-value: 0.11t-test, 1 sided
Secondary

Blinding Assessment; Bang Question (POD1)

There is no numeric scale for this questionnaire. It focuses on asking the subjects and the research assistant, which group they believe the subject were randomized to. This will be asked 24 hours post operative discharge.

Time frame: 24 hours post operative discharge

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed Don't know43 Participants
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed that the subject was in the No PAI+ACB & IPACK group10 Participants
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed that the subject was in the PAI+ACB & IPACK group13 Participants
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed Don't know24 Participants
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed that the subject was in the No PAI+ACB & IPACK group0 Participants
No PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed that the subject was in the PAI+ACB & IPACK group4 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed that the subject was in the No PAI+ACB & IPACK group3 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed Don't know37 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed Don't know22 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed that the subject was in the No PAI+ACB & IPACK group8 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Research Assistant GuessGuessed that the subject was in the PAI+ACB & IPACK group7 Participants
PAI + ACB & IPACKBlinding Assessment; Bang Question (POD1)Subjects GuessGuessed that the subject was in the PAI+ACB & IPACK group17 Participants
Secondary

Douleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 Months

The DN4 ( Douleur Neuropathique en 4 Questions) is a Yes/No questionnaire aimed at uncovering neuropathic pain symptoms. Each question is scored as yes or no, with yes = 1 point and no = 0 points. Total score is calculated by summing the total of the individual question scores, for a total score range of 0-10, with a score of greater than or equal to 4 indicating the patient may be suffering from neuropathic pain. The average score across all participants is calculated and reported for each time point.

Time frame: Pre operative, 3 months post operative discharge.

Population: The number analyzed at POD 3 months differs from the overall number of participant due to lost to follow up.

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKDouleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 Monthsat peroperation2.79 score on a scaleStandard Deviation 1.35
No PAI + ACB & IPACKDouleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 Monthspost operative day (POD) 3 months2.63 score on a scaleStandard Deviation 0.92
PAI + ACB & IPACKDouleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 Monthsat peroperation2.62 score on a scaleStandard Deviation 1.11
PAI + ACB & IPACKDouleur Neuropathique en 4 Questions (DN4) at Pre-operation, 3 Monthspost operative day (POD) 3 months2.78 score on a scaleStandard Deviation 0.92
Secondary

Knee Injury and Osteoarthritis Outcome Score for Joint Replacement

The standard Knee injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS Jr.) questionnaire will be asked to evaluate orthopedic outcomes. The KOOS, JR contains 7 items from the original KOOS survey. Items are coded from 0 to 4, none to extreme respectively. KOOS, JR is scored by summing the raw response (range 0-28) and then converting it to an interval score. The interval score ranges from 0 to 100 where 0 represents total knee disability and 100 represents perfect knee health. The questionnaire will be asked preoperatively, 6 weeks post operative discharge, 3 months post operative discharge.

Time frame: preoperatively, 6 weeks post operative discharge, 3 months post operative discharge

Population: The number analyzed at 6 weeks and 3 months differ from the overall number due to lost to follow up

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat preoperation50.7 score on a scaleStandard Deviation 16.2
No PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat 6 weeks78.31 score on a scaleStandard Deviation 11.36
No PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat 3 months83.39 score on a scaleStandard Deviation 13.83
PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat preoperation49.61 score on a scaleStandard Deviation 16.57
PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat 6 weeks77.05 score on a scaleStandard Deviation 12.86
PAI + ACB & IPACKKnee Injury and Osteoarthritis Outcome Score for Joint Replacementat 3 months83.60 score on a scaleStandard Deviation 9.57
Secondary

NRS Pain With Movement

The NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will focus on pain during movement and will be asked at pre-operation, in the post anesthesia care unit (PACU), at post operative (POD) 1, POD 2, and POD 3 months.

Time frame: pre-operation, in the post anesthesia care unit (PACU), at post operative (POD) 1, POD 2, and POD 3 months

Population: the number of participants analyzed at POD 3 months is different due to lost to follow ups

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKNRS Pain With MovementPost anesthesia care unit (PACU)5.7 units on a scaleStandard Deviation 3.11
No PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 26.68 units on a scaleStandard Deviation 2.29
No PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 14.55 units on a scaleStandard Deviation 2.7
No PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 3 months1.02 units on a scaleStandard Deviation 1.82
No PAI + ACB & IPACKNRS Pain With MovementPre-operation5.17 units on a scaleStandard Deviation 2.52
PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 3 months0.95 units on a scaleStandard Deviation 1.47
PAI + ACB & IPACKNRS Pain With MovementPre-operation5.85 units on a scaleStandard Deviation 2.62
PAI + ACB & IPACKNRS Pain With MovementPost anesthesia care unit (PACU)5.19 units on a scaleStandard Deviation 2.92
PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 14.26 units on a scaleStandard Deviation 3.03
PAI + ACB & IPACKNRS Pain With MovementPost operative day (POD) 26.13 units on a scaleStandard Deviation 2.62
Secondary

Numerical Rating Scale (NRS) Pain Score at Rest

The NRS (numeric rating scale) is a questionnaire that measures pain on a numeric scale, 0 (no pain) to 10 (worst pain imaginable). The questionnaire will focus on pain without movement involved and will be asked at pre-operation, post anesthesia care unit (PACU), post operative day (POD) 1, POD 2, and POD 3 months

Time frame: from pre-operation, post anesthesia care unit (PACU), post operative day (POD) 1, POD 2, and POD 3 months

Population: number of participants analyzed at POD 3 months differed from overall number of participants due to lost to follow up

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpre-operation1.19 units on a scaleStandard Deviation 2.05
No PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 12.36 units on a scaleStandard Deviation 2.29
No PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost anesthesia care unit (PACU)5.66 units on a scaleStandard Deviation 3.17
No PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 24.09 units on a scaleStandard Deviation 2.95
No PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 3 months0.29 units on a scaleStandard Deviation 0.93
PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 24.13 units on a scaleStandard Deviation 3.06
PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 3 months0.46 units on a scaleStandard Deviation 1.02
PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpre-operation1.79 units on a scaleStandard Deviation 2.8
PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost anesthesia care unit (PACU)5.06 units on a scaleStandard Deviation 2.91
PAI + ACB & IPACKNumerical Rating Scale (NRS) Pain Score at Restpost operative day (POD) 12.47 units on a scaleStandard Deviation 2.86
Secondary

Opioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)

Cumulative opioid consumption in morphine equivalents will be recorded post surgical discharge, 24h post surgical discharge, 48 hours post surgical discharge, 2 weeks post surgical discharge, and 3 months post surgical discharge.

Time frame: post surgical discharge, 24 hours post surgical discharge, 48 hours post surgical discharge, 2 weeks post surgical discharge, and 3 months post surgical discharge.

Population: At post operative day 14 and 90, the number analyzed differ from the overall number because some subjects were lost to follow up.

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 125.95 MME/dayStandard Deviation 20.04
No PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 146.91 MME/dayStandard Deviation 10.53
No PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 237.3 MME/dayStandard Deviation 24.86
No PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 900.27 MME/dayStandard Deviation 1.3
No PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post anesthesia care unit (PACU)25.45 MME/dayStandard Deviation 13.71
PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 900.2 MME/dayStandard Deviation 1.23
PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post anesthesia care unit (PACU)21.98 MME/dayStandard Deviation 12.02
PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 122.16 MME/dayStandard Deviation 21.17
PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 228.64 MME/dayStandard Deviation 30.21
PAI + ACB & IPACKOpioid Use (Cumulative Oral Morphine Equivalents POD0-POD2, 2 Weeks, 3 Months)post operative day (POD) 146.68 MME/dayStandard Deviation 10.4
p-value: 0.5t-test, 2 sided
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 1

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.

Time frame: at post operative day (POD) 1

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of dizziness4.86 score on a scaleStandard Deviation 3.23
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel depressed0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from activities in bed2.32 score on a scaleStandard Deviation 3.85
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel helpless.32 score on a scaleStandard Deviation 1.62
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from activities out of bed3.13 score on a scaleStandard Deviation 3.85
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of nausea6 score on a scaleStandard Deviation 3.59
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Least pain in 24 hours1.17 score on a scaleStandard Deviation 2.05
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of drowsiness6.64 score on a scaleStandard Deviation 2.69
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from falling asleep1.06 score on a scaleStandard Deviation 2.63
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of itching0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel frightened.32 score on a scaleStandard Deviation 1.62
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from staying asleep1.19 score on a scaleStandard Deviation 2.84
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Were you allowed to participate in decisions about pain treatment?10 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Worst pain in 24 hours6.53 score on a scaleStandard Deviation 2.69
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How satisfied are you with the results of your pain treatment?9.78 score on a scaleStandard Deviation 0.68
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel anxious.66 score on a scaleStandard Deviation 2.1
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How satisfied are you with the results of your pain treatment?9.68 score on a scaleStandard Deviation 1.53
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel frightened.26 score on a scaleStandard Deviation 1.37
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Least pain in 24 hours1.34 score on a scaleStandard Deviation 2.55
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Worst pain in 24 hours6.15 score on a scaleStandard Deviation 2.97
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from activities out of bed2.4 score on a scaleStandard Deviation 3.47
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from falling asleep.85 score on a scaleStandard Deviation 2.29
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from staying asleep.96 score on a scaleStandard Deviation 2.64
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel anxious.23 score on a scaleStandard Deviation 0.94
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel depressed.11 score on a scaleStandard Deviation 0.73
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1How much the pain caused you to feel helpless0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of nausea8.57 score on a scaleStandard Deviation 2.9
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of drowsiness6.72 score on a scaleStandard Deviation 2.91
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of itching2 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Severity of dizziness6.1 score on a scaleStandard Deviation 3.75
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Were you allowed to participate in decisions about pain treatment?9.76 score on a scaleStandard Deviation 1.46
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1Pain interfered or prevented you from activities in bed2.4 score on a scaleStandard Deviation 3.47
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 14

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.

Time frame: at post operative day (POD) 14

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Least pain in 24 hours1.72 score on a scaleStandard Deviation 2.02
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Worst pain in 24 hours5.6 score on a scaleStandard Deviation 2.62
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from activities in bed2.68 score on a scaleStandard Deviation 3.33
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from activities out of bed1.81 score on a scaleStandard Deviation 2.7
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from falling asleep3.02 score on a scaleStandard Deviation 3.92
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from staying asleep3.15 score on a scaleStandard Deviation 4.13
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel anxious.66 score on a scaleStandard Deviation 2.18
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel depressed.38 score on a scaleStandard Deviation 1.64
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel frightened.09 score on a scaleStandard Deviation 0.58
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel helpless.23 score on a scaleStandard Deviation 1.03
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of nausea5.5 score on a scaleStandard Deviation 2.08
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of drowsiness6 score on a scaleStandard Deviation 4.58
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of itching3.5 score on a scaleStandard Deviation 0.71
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of dizziness0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Were you allowed to participate in decisions about pain treatment?9.76 score on a scaleStandard Deviation 1.02
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How satisfied are you with the results of your pain treatment?9.61 score on a scaleStandard Deviation 0.89
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How satisfied are you with the results of your pain treatment?9.71 score on a scaleStandard Deviation 1.5
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Least pain in 24 hours1.54 score on a scaleStandard Deviation 2.11
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel frightened.07 score on a scaleStandard Deviation 0.44
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Worst pain in 24 hours5.26 score on a scaleStandard Deviation 2.72
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of itching4.71 score on a scaleStandard Deviation 2.81
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from activities in bed2.09 score on a scaleStandard Deviation 2.98
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel helpless.07 score on a scaleStandard Deviation 0.44
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from activities out of bed1.7 score on a scaleStandard Deviation 2.46
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Were you allowed to participate in decisions about pain treatment?10 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from falling asleep2.85 score on a scaleStandard Deviation 3.88
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of nausea0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Pain interfered or prevented you from staying asleep3.26 score on a scaleStandard Deviation 3.96
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of dizziness3 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel anxious.54 score on a scaleStandard Deviation 1.86
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14Severity of drowsiness4.4 score on a scaleStandard Deviation 1.52
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14How much the pain caused you to feel depressed.59 score on a scaleStandard Deviation 1.83
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain Relief

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.

Time frame: at post operative day (POD) 14

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain ReliefThe percentage of time in severe pain on a scale of 0 - 1014.47 percentage of time or reliefStandard Deviation 25.44
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours on a scale of 0 - 109.65 percentage of time or reliefStandard Deviation 2.12
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain ReliefThe percentage of time in severe pain on a scale of 0 - 1017.61 percentage of time or reliefStandard Deviation 28.3
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 14 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours on a scale of 0 - 109.5 percentage of time or reliefStandard Deviation 2.53
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain Relief

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.

Time frame: at post operative day (POD) 1

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain Reliefthe percentage of time in severe pain12.55 percentage of time or reliefStandard Deviation 22.98
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours9.93 percentage of time or reliefStandard Deviation 1.72
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain Reliefthe percentage of time in severe pain11.49 percentage of time or reliefStandard Deviation 20.74
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 1 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours10.14 percentage of time or reliefStandard Deviation 1.85
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 90

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.

Time frame: at post operative day (POD) 90

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Least pain in 24 hours.05 score on a scaleStandard Deviation 0.22
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Worst pain in 24 hours1.68 score on a scaleStandard Deviation 2.18
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from activities in bed.29 score on a scaleStandard Deviation 0.98
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from activities out of bed.63 score on a scaleStandard Deviation 1.39
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from falling asleep.61 score on a scaleStandard Deviation 1.96
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from staying asleep.83 score on a scaleStandard Deviation 2.06
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel anxious.39 score on a scaleStandard Deviation 1.39
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel depressed.54 score on a scaleStandard Deviation 2.01
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel frightened0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel helpless0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of nausea0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of drowsiness3 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of itching7 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of dizziness0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Were you allowed to participate in decisions about pain treatment?9.51 score on a scaleStandard Deviation 2.18
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How satisfied are you with the results of your pain treatment?9.48 score on a scaleStandard Deviation 1.76
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How satisfied are you with the results of your pain treatment?9.81 score on a scaleStandard Deviation 0.87
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Least pain in 24 hours.24 score on a scaleStandard Deviation 0.86
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel frightened0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Worst pain in 24 hours1.81 score on a scaleStandard Deviation 2.15
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of itching0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from activities in bed.89 score on a scaleStandard Deviation 2.13
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel helpless.14 score on a scaleStandard Deviation 0.82
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from activities out of bed.65 score on a scaleStandard Deviation 1.86
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Were you allowed to participate in decisions about pain treatment?10 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from falling asleep.43 score on a scaleStandard Deviation 1.48
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of nausea0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Pain interfered or prevented you from staying asleep.86 score on a scaleStandard Deviation 2.18
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of dizziness0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel anxious.35 score on a scaleStandard Deviation 1.23
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90Severity of drowsiness0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90How much the pain caused you to feel depressed.27 score on a scaleStandard Deviation 1.15
Secondary

PAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain Relief

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.

Time frame: at post operative day (POD) 90

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain ReliefThe percentage of time in severe pain9.02 percentage of time or reliefStandard Deviation 26.44
No PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours10.12 percentage of time or reliefStandard Deviation 2.63
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain ReliefThe percentage of time in severe pain7.57 percentage of time or reliefStandard Deviation 23.5
PAI + ACB & IPACKPAIN OUT Questionnaire at Post Operative Day (POD) 90 / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours10.37 percentage of time or reliefStandard Deviation 2.3
Secondary

PAIN OUT Questionnaire at Preoperation

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome.

Time frame: at preoperation

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationLeast pain in 24 hours0.96 score on a scaleStandard Deviation 1.96
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationWorst pain in 24 hours6.57 score on a scaleStandard Deviation 2.83
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from activities in bed3.11 score on a scaleStandard Deviation 3.51
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from activities out of bed5.04 score on a scaleStandard Deviation 3.55
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from falling asleep2.49 score on a scaleStandard Deviation 3.71
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from staying asleep2.49 score on a scaleStandard Deviation 3.71
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel anxious1.02 score on a scaleStandard Deviation 2.55
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel depressed1.15 score on a scaleStandard Deviation 2.66
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel frightened0.49 score on a scaleStandard Deviation 1.72
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel helpless1.13 score on a scaleStandard Deviation 2.68
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of nausea0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of drowsiness0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of itching0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of dizziness0 score on a scaleStandard Deviation 0
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationWere you allowed to participate in decisions about pain treatment?7.5 score on a scaleStandard Deviation 5
No PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow satisfied are you with the results of your pain treatment?6.66 score on a scaleStandard Deviation 5.77
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow satisfied are you with the results of your pain treatment?10 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationLeast pain in 24 hours1.45 score on a scaleStandard Deviation 2.49
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel frightened1.02 score on a scaleStandard Deviation 2.57
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationWorst pain in 24 hours6.79 score on a scaleStandard Deviation 2.7
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of itching0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from activities in bed3.02 score on a scaleStandard Deviation 3.4
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel helpless1.02 score on a scaleStandard Deviation 2.57
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from activities out of bed5.94 score on a scaleStandard Deviation 3.45
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationWere you allowed to participate in decisions about pain treatment?10 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from falling asleep3.06 score on a scaleStandard Deviation 4
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of nausea5 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationPain interfered or prevented you from staying asleep3.06 score on a scaleStandard Deviation 4
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of dizziness0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel anxious1.89 score on a scaleStandard Deviation 3.23
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationSeverity of drowsiness0 score on a scaleStandard Deviation 0
PAI + ACB & IPACKPAIN OUT Questionnaire at PreoperationHow much the pain caused you to feel depressed1.6 score on a scaleStandard Deviation 3.1
Secondary

PAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain Relief

The PAIN OUT questionnaire has multiple numeric scale questions on pain relief as well as pain intensity, along with Yes/No questions. There are also questions asking which pain relief techniques were used (multiple choice). All questions are scored on a scale of 0 to 10, with 0 meaning no pain/does not interfere/not at all and 10 meaning worst pain/completely interferes/extremely. A higher score means a worse outcome. This outcome records the percentage of time in severe pain and percentage pain relief, both scored from 0% to 100%.

Time frame: at preoperation

Population: preoperative

ArmMeasureGroupValue (MEAN)Dispersion
No PAI + ACB & IPACKPAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain ReliefPercentage of time in severe pain17.02 percentage of time or reliefStandard Deviation 22.83
No PAI + ACB & IPACKPAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours5.5 percentage of time or reliefStandard Deviation 3.07
PAI + ACB & IPACKPAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain ReliefPercentage of time in severe pain18.09 percentage of time or reliefStandard Deviation 27.4
PAI + ACB & IPACKPAIN OUT Questionnaire at Preoperation / Percentage of Time in Severe Pain and Pain ReliefPain relief in the first 24 hours6.14 percentage of time or reliefStandard Deviation 2.91
Secondary

Quality of Recovery (POD1)

Quality of Recovery (QoR-9), This questionnaire has three options for scale (not at all, some of the time, most of the time). The QoR-9 is a nine-item scale. Total QoR-9-scores range from 0 to 18, with higher scores indicating good recovery after anaesthesia. The questions focus on the overall well being of the patient. The questionnaire will be asked 24 hours post surgical discharge.

Time frame: 24 hours post surgical discharge.

ArmMeasureValue (MEAN)Dispersion
No PAI + ACB & IPACKQuality of Recovery (POD1)16.62 units on a scaleStandard Deviation 2.31
PAI + ACB & IPACKQuality of Recovery (POD1)16.96 units on a scaleStandard Deviation 2
Secondary

Satisfaction With Pain Management (POD1)

This questionnaire is a numeric scale from 0 (strongly dissatisfied) to 10 ( strongly satisfied). A higher number dictates a better outcome. This will be asked 24 hours post operative discharge.

Time frame: 24 hours post operative discharge.

ArmMeasureValue (MEAN)Dispersion
No PAI + ACB & IPACKSatisfaction With Pain Management (POD1)9.7 score on a scaleStandard Deviation 0.81
PAI + ACB & IPACKSatisfaction With Pain Management (POD1)9.66 score on a scaleStandard Deviation 1.54
Secondary

Side Effects: Opioid-Related Symptom Distress Score (POD1)

The Opioid-related symptom distress scale evaluates frequency, severity, bothersomeness for 12 symptoms. Each symptom is scored on a 4-point scale, with 0 meaning better outcome and 4 meaning worst outcome. The questionnaire will be asked 24 hours (POD 1) post surgical discharge.

Time frame: 24 hours (POD 1) post surgical discharge.

ArmMeasureValue (MEAN)Dispersion
No PAI + ACB & IPACKSide Effects: Opioid-Related Symptom Distress Score (POD1).55 score on a scaleStandard Deviation 0.97
PAI + ACB & IPACKSide Effects: Opioid-Related Symptom Distress Score (POD1).74 score on a scaleStandard Deviation 1.09

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026