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Pain Outcomes of Non-opioid vs. Opioid Analgesia for Kidney Stone Surgery.

Pain Outcomes of Non-opioid Analgesia After Ureteroscopy or Percutaneous Nephrolithotomy for Nephrolithiasis: a Prospective Randomized Controlled Trial.

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03584373
Acronym
PO-NOA
Enrollment
119
Registered
2018-07-12
Start date
2018-07-27
Completion date
2022-03-23
Last updated
2023-12-18

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

Conditions

Nephrolithiasis

Keywords

Pain Outcomes, Ureteroscopy, Percutaneous Nephrolithotomy, Opioids

Brief summary

There are two options for postoperative pain management: opioid and non-opioid analgesia. Pain outcomes will be compared in patients undergoing ureteroscopy and percutaneous nephrolithotomy by randomly administering opioid and non-opioid analgesia.

Detailed description

Perioperative pain is often managed by opioids. However, post surgical pain management with opioids can often lead to long-term opioid use; additionally, opioids can cause unwanted side effects including respiratory depression that can lead to hypoxia and respiratory arrest, as well as nausea, vomiting, pruritus, ileus, and constipation. As an alternative to opioid perioperative pain management, non-opioid analgesia has been proven to be as effective as opioid management in acute pain. Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and acetaminophen are often utilized as alternatives to opioid analgesia, and have an increased efficacy when combined. Both NSAIDS and acetaminophen have been proven to decrease opioid requirements and have minimized opiate-induced adverse events. In this randomized clinical trial, pain outcomes after ureteroscopy and percutaneous nephrolithotomy will be investigated in patients who are treated with opioids versus a non-opioid regimen of ketorolac and acetaminophen. Percutaneous nephrolithotomy and ureteroscopy are minimally invasive surgical techniques to surgically remove kidney stones. This trial will seek to determine whether non-opioid therapy is noninferior to opioid therapy in the determination of pain intensity as measured by an 11-point numeric rating scale, in which 0 indicates no pain and 10 indicates the worst possible pain, one week after the surgery by telephone call.

Interventions

DRUGKetorolac Oral Tablet [Toradol]

Ketorolac is a prescribed NSAID with strong analgesic activity. Ketorolac will be administered post surgery to compare pain outcomes to that of Percocet.

DRUGAcetaminophen

Acetaminophen is an over-the counter pain medication that will be administered post surgery to compare pain outcomes to that of Percocet.

Percocet is a prescribed opioid medication to manage pain. Percocet will be administered post surgery to compare pain outcomes to that of non-opioid analgesia.

Sponsors

Montefiore Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Intervention model description

This will be an open label, prospective study of approximately 112 subjects undergoing either ureteroscopy or percutaneous nephrolithotomy. Patients who are eligible and choose to undergo ureteroscopy or percutaneous nephrolithotomy will then be asked if they would like to participate in the study and informed consent will be obtained. Patients will then be randomized to control (opioid analgesia) or non-opioid analgesia groups, and given this medication at discharge.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Men and Women age\>18 years old * Presence of renal or ureteral stones suitable for ureteroscopy or percutaneous nephrolithotomy. * Uncomplicated ureteroscopy or percutaneous nephrolithotomy

Exclusion criteria

* Pregnant/Breastfeeding/Possibly Pregnant Patients * Pediatric Patients * Sensitive or Allergic to Opioids, Ketorolac, or Acetaminophen * Significant Renal Disease * Peptic Ulcer Disease * Chronic Pain and recovering opiate use * Inability to complete questionnaires * Non-mobile patients * Patients on methadone

Design outcomes

Primary

MeasureTime frameDescription
Satisfaction With Pain Relief1 week post surgeryThe patient will be administered a survey and asked to rate satisfaction with pain relief since the time of surgery and being on the assigned medication. Scoring will be on an 11-point ordinal numeric rating scale, with 0 being not satisfied with pain relief, and 10 being well-satisfied. Higher scores are indicative of greater satisfaction with pain relief
Current Pain Intensity Level1 week post surgeryThe patient will be administered a survey and asked to rate their current pain intensity level (1 week post surgery) on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scores are indicative of greater pain intensity.
Peak Pain Intensity Level1 week post surgeryThe patient will be administered a survey and asked to rate the worst/peak pain intensity level since undergoing the surgery. The patient will be asked to rate this worst pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scoring is indicative of worst/peak pain intensity level since the time of surgery
Average Pain Intensity Level1 week post surgeryThe patient will be administered a survey and asked to rate their average pain intensity level since undergoing surgery. The patient will be asked to rate this average pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scores are indicative of higher average pain intensity.
Perception of an Acceptable Pain Intensity Level1 week post surgeryThe patient will be administered a survey and asked to rate what their perception or belief of an acceptable pain intensity level would be since undergoing the surgery. The patient will be asked to rate this acceptable pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 equaling no pain, and 10 being the worst possible pain. Higher scores are indicative of the patient's belief of an acceptable pain intensity level.

Secondary

MeasureTime frameDescription
Unused Medications - Proportion of Prescribed Pills Unused at 1 Week Post-Surgery1 week post surgeryUnused medications is defined as the proportion of prescribed pills that were unused at 1 week post surgery as reported by the patient. More unused medications may indicate the potential to decrease the dosage needed.
Rates of Constipation1 week post surgeryPercentage of patients who experienced constipation any time during the week after surgery. A lower percentage of constipation may indicate less incidence of adverse events.

Countries

United States

Participant flow

Recruitment details

Patients scheduled for surgery between July 2018 and May 2021 were consented and enrolled into the study.

Pre-assignment details

A total of 119 patients were consented and enrolled into the study. Of the 119 patients, 14 patients screen failed (did not meet inclusion/exclusion criteria) and were not randomized into the study. Accordingly, 105 patients were randomized into the two arms/groups for this study.

Participants by arm

ArmCount
Non-Opioid Analgesia
Ketorolac - Oral; 10 mg tablet: 1 tablet every 6 hours, or as needed. (20 tablets prescribed). Acetaminophen - Oral; patient directed as needed. Not prescribed. Ketorolac and Acetaminophen administered post surgery to compare pain outcomes to that of Percocet. Ketorolac Oral Tablet \[Toradol\]: Ketorolac is a prescribed NSAID with strong analgesic activity. Ketorolac will be administered post surgery to compare pain outcomes to that of Percocet. Acetaminophen: Acetaminophen is an over-the counter pain medication that will be administered post surgery to compare pain outcomes to that of Percocet.
51
Opioid Analgesia
Percocet - Oral; 5 mg tablet: 1 tablet every 4-6 hours, or as needed. (10 tablets prescribed). Percocet administered post surgery to compare pain outcomes to that of the non-opioid analgesia. Oxycodone Acetaminophen: Percocet is a prescribed opioid medication to manage pain. Percocet will be administered post surgery to compare pain outcomes to that of non-opioid analgesia.
54
Total105

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up78

Baseline characteristics

CharacteristicNon-Opioid AnalgesiaOpioid AnalgesiaTotal
Age, Continuous49 years
STANDARD_DEVIATION 15.8
47 years
STANDARD_DEVIATION 14.7
48 years
STANDARD_DEVIATION 15.2
Average Stone Burden10.9 millimeters
STANDARD_DEVIATION 4.5
18.1 millimeters
STANDARD_DEVIATION 12.1
14.7 millimeters
STANDARD_DEVIATION 9.8
Body Mass Index (BMI)29.0 kg/m^2
STANDARD_DEVIATION 5.8
29.2 kg/m^2
STANDARD_DEVIATION 6.3
29.1 kg/m^2
STANDARD_DEVIATION 6
Participants with Percutaneous Nephrolithotomy (PCNL) Surgeries13 Participants18 Participants31 Participants
Prior Kidney Stone Removal Surgery23 Participants15 Participants38 Participants
Race/Ethnicity, Customized
Hispanic
22 Participants33 Participants55 Participants
Race/Ethnicity, Customized
Non-Hispanic Black
8 Participants10 Participants18 Participants
Race/Ethnicity, Customized
Non-Hispanic White
5 Participants3 Participants8 Participants
Race/Ethnicity, Customized
Other/Unknown
16 Participants8 Participants24 Participants
Region of Enrollment
United States
51 participants54 participants105 participants
Sex: Female, Male
Female
27 Participants27 Participants54 Participants
Sex: Female, Male
Male
24 Participants27 Participants51 Participants
Stent Placement During Procedure33 Participants35 Participants68 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 510 / 54
other
Total, other adverse events
2 / 511 / 54
serious
Total, serious adverse events
5 / 517 / 54

Outcome results

Primary

Average Pain Intensity Level

The patient will be administered a survey and asked to rate their average pain intensity level since undergoing surgery. The patient will be asked to rate this average pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scores are indicative of higher average pain intensity.

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaAverage Pain Intensity Level3.34 score on a scaleStandard Deviation 2.57
Opioid AnalgesiaAverage Pain Intensity Level4.50 score on a scaleStandard Deviation 2.69
p-value: 0.0495% CI: [-2.26, -0.06]t-test, 2 sided
Primary

Current Pain Intensity Level

The patient will be administered a survey and asked to rate their current pain intensity level (1 week post surgery) on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scores are indicative of greater pain intensity.

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaCurrent Pain Intensity Level1.14 score on a scaleStandard Deviation 1.94
Opioid AnalgesiaCurrent Pain Intensity Level1.37 score on a scaleStandard Deviation 2.08
p-value: 0.5895% CI: [-1.08, 0.61]t-test, 2 sided
Primary

Peak Pain Intensity Level

The patient will be administered a survey and asked to rate the worst/peak pain intensity level since undergoing the surgery. The patient will be asked to rate this worst pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 being no pain, and 10 being the worst possible pain. Higher scoring is indicative of worst/peak pain intensity level since the time of surgery

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaPeak Pain Intensity Level5.61 score on a scaleStandard Deviation 3.41
Opioid AnalgesiaPeak Pain Intensity Level7.52 score on a scaleStandard Deviation 3
p-value: 0.00695% CI: [-3.25, -0.56]t-test, 2 sided
Primary

Perception of an Acceptable Pain Intensity Level

The patient will be administered a survey and asked to rate what their perception or belief of an acceptable pain intensity level would be since undergoing the surgery. The patient will be asked to rate this acceptable pain intensity level on an 11-point ordinal numeric rating scale ranging from 0-10, with 0 equaling no pain, and 10 being the worst possible pain. Higher scores are indicative of the patient's belief of an acceptable pain intensity level.

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaPerception of an Acceptable Pain Intensity Level2.73 score on a scaleStandard Deviation 2.48
Opioid AnalgesiaPerception of an Acceptable Pain Intensity Level3.28 score on a scaleStandard Deviation 2.85
p-value: 0.3395% CI: [-1.67, 0.56]t-test, 2 sided
Primary

Satisfaction With Pain Relief

The patient will be administered a survey and asked to rate satisfaction with pain relief since the time of surgery and being on the assigned medication. Scoring will be on an 11-point ordinal numeric rating scale, with 0 being not satisfied with pain relief, and 10 being well-satisfied. Higher scores are indicative of greater satisfaction with pain relief

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaSatisfaction With Pain Relief8.70 score on a scaleStandard Deviation 2.01
Opioid AnalgesiaSatisfaction With Pain Relief8.85 score on a scaleStandard Deviation 1.49
p-value: 0.795% CI: [-0.89, 0.6]t-test, 2 sided
Secondary

Rates of Constipation

Percentage of patients who experienced constipation any time during the week after surgery. A lower percentage of constipation may indicate less incidence of adverse events.

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-Opioid AnalgesiaRates of Constipation11 Participants
Opioid AnalgesiaRates of Constipation17 Participants
Secondary

Unused Medications - Proportion of Prescribed Pills Unused at 1 Week Post-Surgery

Unused medications is defined as the proportion of prescribed pills that were unused at 1 week post surgery as reported by the patient. More unused medications may indicate the potential to decrease the dosage needed.

Time frame: 1 week post surgery

Population: Data was not collected and analyzed for the 7 participants who were lost to follow up in the non-opioid analgesia arm and 8 participants who were lost to follow up in the opioid analgesia arm.

ArmMeasureValue (MEAN)Dispersion
Non-Opioid AnalgesiaUnused Medications - Proportion of Prescribed Pills Unused at 1 Week Post-Surgery0.63 proportion of unused pillsStandard Deviation 0.37
Opioid AnalgesiaUnused Medications - Proportion of Prescribed Pills Unused at 1 Week Post-Surgery0.58 proportion of unused pillsStandard Deviation 0.35
p-value: 0.4795% CI: [-0.1, 0.21]t-test, 2 sided

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