Analgesic Efficacy & Safety of Intravenous (IV) Acetaminophen Versus Placebo for the Treatment of Postop Pain

NCT ID: NCT00564486

Last Updated: 2016-10-21

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 244 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2007-11-30
• Study Completion Date: 2008-09-30

Brief Summary

This research study will look at the pain relieving ability and safety of using repeated doses of intravenous (into the vein [IV]) acetaminophen in the treatment of moderate postoperative pain after planned or elective abdominal laparoscopic surgery, such as a laparoscopic abdominal hysterectomy or laparoscopic cholecystectomy (removal of the gall bladder).

Detailed Description

To assess the analgesic efficacy of repeated doses of intravenous acetaminophen (IV APAP) versus Placebo in the treatment of moderate postoperative pain after abdominal laparoscopic surgery.

Conditions

Pain

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

IV Placebo 100 ml

IV Placebo 100 ml dosed every every 6 hours for 24 hours (4 doses total).

Group Type: PLACEBO_COMPARATOR

IV Placebo

Intervention Type: DRUG

IV, every 6 hours for 24 hours (4 doses total)

IV Placebo 65 ml

IV Placebo 65 ml dosed every every 4 hours for 24 hours (6 doses total).

Group Type: PLACEBO_COMPARATOR

IV Placebo

Intervention Type: DRUG

IV, every 4 hours for 24 hours (6 doses total)

IV Acetaminophen 1 gm

IV Acetaminophen 1 gm dosed every every 6 hours for 24 hours (4 doses total).

Group Type: EXPERIMENTAL

IV Acetaminophen

Intervention Type: DRUG

IV, every 6 hours for 24 hours (4 doses total)

IV Acetaminophen 650 mg

IV Acetaminophen 650 mg dosed every every 4 hours for 24 hours (6 doses total).

Group Type: EXPERIMENTAL

IV Acetaminophen

Intervention Type: DRUG

IV, every 4 hours for 24 hours (6 doses total)

Interventions

IV Placebo

IV, every 6 hours for 24 hours (4 doses total)

Intervention Type: DRUG

IV Placebo

IV, every 4 hours for 24 hours (6 doses total)

Intervention Type: DRUG

IV Acetaminophen

IV, every 6 hours for 24 hours (4 doses total)

Intervention Type: DRUG

IV Acetaminophen

IV, every 4 hours for 24 hours (6 doses total)

Intervention Type: DRUG

Other Intervention Names

placebo; placebo; APAP; IV APAP; APAP; IV APAP

Eligibility Criteria

Inclusion Criteria

• Provide written Informed Consent prior to participation in the Study
• Is scheduled to undergo abdominal laparoscopic surgery under general anesthesia (laparoscopic bariatric procedures, including gastric bypass or gastric banding, laparoscopic exploratory procedures in which no visceral dissection is performed, and laparoscopic procedures with minimal visceral dissection, such as laparoscopic sterilization,are excluded)
• If Subject is a female of childbearing potential, have a negative pregnancy test within 21 days of surgery
• Be at least 18, but not more than 80 years of age
• Have a Body Mass Index (BMI) ≥ 19 and ≤ 40 lb/in2
• Have an American Society of Anesthesiologist (ASA) risk class of I, II, or III
• Have the ability to read and understand the Study procedures and the use of the pain scales and have the ability to communicate meaningfully with the Study Investigator and staff
• Be free of other physical, mental, or medical conditions which, in the opinion of the Investigator, makes Study participation inadvisable

Exclusion Criteria

• Used opioids or tramadol daily for greater than 7 days prior to Study Medication administration (Subjects who, in the Investigator's opinion have or are developing opioid tolerance are to be excluded)
• Has been treated with Chapparal, Comfrey, Germander, Gin Bu Huan, Kava, Pennyroyal, Skullcap, St. John's Wort, or Valerian within 14 days prior to surgery
• Has significant medical disease(s), laboratory abnormalities or condition(s) that in the Investigator's judgment could compromise the Subject's welfare, ability to communicate with the Study staff, complete Study activities, or would otherwise contraindicate Study participation
• Has known hypersensitivity to opioids, acetaminophen, or the inactive ingredients (excipients) of the Study Medication
• Has known or suspected history of alcohol or drug abuse or dependence within the previous 2 years
• Has impaired liver function, e.g., aspartate aminotransferase (AST)/Alanine transaminase (ALT)/bilirubin greater than or equal to 3.0 times the upper limit of normal, active hepatic disease, evidence of clinically significant liver disease, or other condition (e.g., alcoholism, cirrhosis, or hepatitis) that may suggest the potential for an increased susceptibility to hepatic toxicity with Study Medication exposure
• Has been treated with monoamine oxidase inhibitors (MAOIs) within 7 days prior to surgery
• Has participated in another clinical Study (investigational or marketed product) within 30 days of surgery

The Subject must not meet any of the following criteria prior to randomization to Study Medication:

• Had any other surgery than the planned laparoscopic surgery or had intra operative or post operative complications which in the view of the Investigator would make Study participation inadvisable
• Has taken non steroidal anti-inflammatory drugs (NSAIDs), steroids or MAOIs during the day after surgery. Exceptions: The use of low-dose aspirin, e.g, 81 mg/day, for cardioprophylaxis, and limited use of topical or inhaled steroids are acceptable.
• Had any neuraxial (spinal or epidural) opioid injected perioperatively
• Had a local anesthetic injection (including into surgical wound at closure) or continuous infusion by any route
• Had an epidural, regional, or percutaneous (intrawound) catheter with continuous local anesthetic infusion used for postoperative analgesic management
• Had a fever (greater than 38.6 ºC or 101.5 ºF) requiring treatment

Post Operative Day 1 Randomization Criterion On the morning of the first post operative day (POD1), the Subject must have a categorical pain intensity score at rest of moderate or severe and a score ≥ 40 mm and ≤ 70 mm at rest on a 100 mm Visual Analogue Scale (VAS)

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 80 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Mallinckrodt

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Helen Keller Hospital

Sheffield, Alabama, United States

Precision Trials

Phoenix, Arizona, United States

Methodist Hospital

Arcadia, California, United States

Glendale Adventist Medical Center

Glendale, California, United States

Physicians Clinical Research Corporation

Laguna Hills, California, United States

Huntington Memorial Hospital

Pasadena, California, United States

Visions Clinical Research

Boynton Beach, Florida, United States

Nature Coast Clinical Research

Crystal River, Florida, United States

G and G Research, Inc.

Ft. Pierce, Florida, United States

Advanced Surgery Associates at Mercy Hospital

Miami, Florida, United States

University of Miami School of Medicine

Miami, Florida, United States

William Beaumont Hospital (Royal Oak)

Royal Oak, Michigan, United States

William Beaumont Hospital (Troy)

Royal Oak, Michigan, United States

Cooper University Hospital

Camden, New Jersey, United States

Staten Island University Hospital

Staten Island, New York, United States

Memorial Herman/Memorial City Hospital

Houston, Texas, United States

Texas Woman's Hospital

Houston, Texas, United States

Countries

United States

References

Wininger SJ, Miller H, Minkowitz HS, Royal MA, Ang RY, Breitmeyer JB, Singla NK. A randomized, double-blind, placebo-controlled, multicenter, repeat-dose study of two intravenous acetaminophen dosing regimens for the treatment of pain after abdominal laparoscopic surgery. Clin Ther. 2010 Dec;32(14):2348-69. doi: 10.1016/j.clinthera.2010.12.011.

Reference Type: DERIVED

PMID: 21353105 (View on PubMed)

Other Identifiers

CPI-APA-304

Identifier Type: -

Identifier Source: org_study_id