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The Impact of IV Acetaminophen on Pain After Appendectomy for Perforated Appendicitis

Impact of IV Acetaminophen on Post-operative Pain After Laparoscopic Appendectomy for Perforated Appendicitis: A Prospective Randomized Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02881996
Enrollment
90
Registered
2016-08-29
Start date
2014-06-30
Completion date
2016-08-31
Last updated
2021-01-12

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

Conditions

Perforated Appendicitis

Keywords

appendicitis, pain, perforation

Brief summary

The objective of this study is to evaluate two standard post-operative pain regimens routinely used after laparoscopic appendectomy for perforated appendicitis. The investigators hypothesize that the use of intravenous (IV) acetaminophen in addition to IV ketorolac with narcotic pain pump will decrease time to transition off patient/nurse controlled analgesia (PCA) to oral pain medications.

Detailed description

To assess pain control, patient and family perception of pain control, time to return of bowel function defined as passage of first flatus (in days), doses of anti-emetic medications, doses of narcotic pain medications, time to toleration of regular diet (in days), narcotic associated adverse effects (nausea, emesis, respiratory depression, constipation), length of stay, and overall hospital cost in admission. Post-hospitalization the investigators will assess complications including number and reasons for emergency visits and abscess formation, length of post-hospitalization analgesic use, length of post-hospitalization narcotic use, and time to return to school.

Interventions

DRUGIV tylenol

IV tylenol given scheduled in addition to standard PCA

DRUGNo IV tylenol

No additional IV Tylenol given

DRUGKetorolac

both groups receive as part of our standard postop pain protocol after all operations

Sponsors

Children's Mercy Hospital Kansas City
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* All patients ages 2-17 years old undergoing laparoscopic appendectomy at CMH found to have perforated appendicitis.

Exclusion criteria

* Non-perforated appendicitis * Normal appendix at the time of operation or other associated conditions causing abdominal pain * Patients with history of chronic pain * Known underlying liver disorders * Known allergy to pain medication in protocol * Non-English speaking

Design outcomes

Primary

MeasureTime frameDescription
Time Until PCA Discontinued After the Operation4 daysThe investigators hypothesize that the use of intravenous (IV) acetaminophen in addition to IV ketorolac with narcotic pain pump will decrease time to transition off PCA/NCA to oral pain medications.

Secondary

MeasureTime frameDescription
Postoperative Duration of Hospital Stay1 weekThe investigators will measure postoperative time to discharge

Countries

United States

Participant flow

Participants by arm

ArmCount
IV Tylenol
Post-operatively, all patients will be placed on a standard patient/nurse controlled analgesia (PCA) according to our pain service protocol which included ketorolac. A 3 hours after first dose of ketorolac, patients in the acetaminophen arm will then receive scheduled 10mg/kg of IV acetaminophen every 6hrs for a total of 3 days in between doses of ketorolac. PCA Pumps will be discontinued with the return of bowel function and transition to oral intake in all patients as per the current protocol. If a patient in the acetaminophen arm is transitioned off of PCA prior to 3 days, IV acetaminophen will be stopped at that time as well. Patients in the control group only may receive oral/rectal acetaminophen as needed for treatment of fevers. IV tylenol: IV tylenol given scheduled in addition to standard PCA Ketorolac: both groups receive as part of our standard postop pain protocol after all operations
39
No IV Tylenol
Same as above without IV tylenol. No IV tylenol: No additional IV Tylenol given Ketorolac: both groups receive as part of our standard postop pain protocol after all operations
43
Total82

Baseline characteristics

CharacteristicNo IV TylenolTotalIV Tylenol
Age, Categorical
<=18 years
43 Participants82 Participants39 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants
Age, Continuous9.6 years10.25 years10.9 years
Race and Ethnicity Not Collected0 Participants
Region of Enrollment
United States
43 participants82 participants39 participants
Sex: Female, Male
Female
13 Participants27 Participants14 Participants
Sex: Female, Male
Male
30 Participants55 Participants25 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 390 / 43
other
Total, other adverse events
0 / 390 / 43
serious
Total, serious adverse events
0 / 390 / 43

Outcome results

Primary

Time Until PCA Discontinued After the Operation

The investigators hypothesize that the use of intravenous (IV) acetaminophen in addition to IV ketorolac with narcotic pain pump will decrease time to transition off PCA/NCA to oral pain medications.

Time frame: 4 days

ArmMeasureValue (MEAN)
IV TylenolTime Until PCA Discontinued After the Operation76.4 hours
No IV TylenolTime Until PCA Discontinued After the Operation86.7 hours
Secondary

Postoperative Duration of Hospital Stay

The investigators will measure postoperative time to discharge

Time frame: 1 week

ArmMeasureValue (MEDIAN)
IV TylenolPostoperative Duration of Hospital Stay3.9 days
No IV TylenolPostoperative Duration of Hospital Stay4.5 days

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