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Analgesic Efficacy of Repeated Doses of Intravenous (IV) Acetaminophen in Post-operative Pediatric Spine Fusion Patients (IV APAP SF)

This study is currently recruiting participants. (see Contacts and Locations)
Verified February 2015 by Children's Hospital of Philadelphia
Information provided by (Responsible Party):
Children's Hospital of Philadelphia Identifier:
First received: July 13, 2011
Last updated: February 11, 2015
Last verified: February 2015

This is a prospective, randomized, double-blinded, placebo controlled trial Potential subjects will be identified from the Pre-Surgical Anesthesia Clinic visit. Parents/legal guardians will be approached about study participation at the Anesthesia outpatient pre-visit. Attending Anesthesiologist will receive e-mail notification about potential subject participation the day before the scheduled surgery. Study lab (hepatic function panel) will be collected as soon as possible after anesthesia induction by anesthesia. Results will be reviewed by study team member and study drug will be ordered by study team if patient does not meet exclusion criteria. Study drug (IV acetaminophen or placebo) will be administered at the time of skin closure by anesthesia on completion of the surgical procedure (after randomization). Study drug will be administered every 6 hours for 2 days. Subjects will continue to receive standard of care with patient controlled analgesia (PCA) opiate therapy (morphine or hydromorphone) for analgesia as per the Pain Management Service. Pain scores, opiate (morphine equivalent) administered, requirements for treatment of opiate related side effects (treatment for nausea and itching), and certain post-operative characteristics will be measured for up to 4 days post-operatively (time to mobilization, time to diet advancement, time to discharge).

Condition Intervention Phase
Pain, Postoperative
Drug: Intravenous Acetaminophen
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Analgesia Efficacy of Repeated Doses of Intravenous Acetaminophen (Paracetamol) in the Pediatric Spinal Fusion Population

Resource links provided by NLM:

Further study details as provided by Children's Hospital of Philadelphia:

Primary Outcome Measures:
  • Analgesia Efficacy operatively [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    Analgesic Efficacy will be quantified as the opiate requirement reduction post-operatively when compared between treatment and placebo groups. Opiate requirement will be calculated as morphine equivalents per kilogram in study subjects.

Secondary Outcome Measures:
  • Pain Scores between treatment and control groups [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    Pain Scores will be measured using the Numeric Pain Scale

  • Nausea Scores between treatment and control groups [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    Nausea scores will be measured and compared between treatment and placebo arms using a standard nausea scale

  • Compare Pruritus scores between treatment and control groups [ Time Frame: 1 year ] [ Designated as safety issue: No ]
    Pruritus scores will be compared between the two groups: treatment and placebo arms.

Estimated Enrollment: 75
Study Start Date: July 2011
Estimated Study Completion Date: June 2016
Estimated Primary Completion Date: June 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Placebo Comparator: Saline Placebo
Control subjects will receive saline as placebo at the time of skin closure intra-operatively and will continue to receive IV saline for 44 hours post-operatively. Doses will be administered every 6 hours (total of 8 doses).
Experimental: Intravenous Acetaminophen
Subjects will receive the first dose of intravenous (IV) acetaminophen (at 15 mg/kg, with maximum doses based on patient age and weight) at the time of skin closure intra-operatively and will continue to receive IV acetaminophen for 42 hours post-operatively. Doses will be administered every 6 hours (total of 8 doses).
Drug: Intravenous Acetaminophen
Scheduled doses of 15 mg/kg of IV acetaminophen will be administered to the treatment arm of the study for a total of 8 doses over a 48 hour period post-operatively.

Detailed Description:

An ideal drug as an opiate-sparing analgesic adjunct, acetaminophen, unlike some other drugs, is platelet function sparing, and thus particularly useful in the post-operative orthopedic patient population. In part because of its well established safety profile, as well as minimal drug interactions, acetaminophen is considered a cornerstone of a multimodal analgesic approach. Several studies have described the clinically significant beneficial effects of a multimodal drug approach to analgesia, citing improved pain control and a shorter recovery time. Reduced adverse events and improved pain control with multimodal analgesia drug approaches may result in shorter hospitalizations, improved recovery and function, and reduced health care costs. Opiate therapy, while effective analgesia, is associated with a variety of potential adverse side effects, including pruritus, nausea, emesis, ileus, respiratory depression, tolerance, addiction and sedation. These adverse effects may limit post-operative mobility, postpone return of bowel function, cause feeding intolerance, prolong hospitalization, and postpone post-operative recovery.

While oral acetaminophen is useful as an opiate-sparing therapy, the oral route of drug administration may not be feasible in the early post-operative period. Enteral drug absorption in the initial post-operative period may be erratic, with negative impacts on therapeutic effect. Intravenous acetaminophen may a particularly useful analgesic in these circumstances. At present, there are no pediatric studies in the United States examining the efficacy of multiple- dose IV acetaminophen in the post-operative surgical population. This study will compare analgesic efficacy, nausea and pruritus scores, time to recovery, and length of hospital stay in two subject groups who are status post spine fusion surgery: those who receive schedule IV acetaminophen and opiate for 48 hours, and those who are treated with standard opiate therapy without IV acetaminophen.


Ages Eligible for Study:   10 Years to 18 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

Subjects 10-18 years who are status post anterior or posterior spine fusion surgery

Exclusion Criteria:

  1. All patients requiring mechanical ventilation post-operatively, continuous infusions of sedative, or continuous infusions of alternate opiates (i.e. fentanyl)
  2. Patients with hepatic dysfunction
  3. Patients with chronic opiate requirements
  4. Pregnant or lactating females
  5. Patients placed on opiates other than morphine or hydromorphone
  6. Patients with opiate or acetaminophen allergies
  7. Patients placed on alternate analgesic adjuncts (i.e. ketamine, etc)
  8. Patients who receive intrathecal opiates
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01394718

Contact: Athena Zuppa, MD 267-426-7359

United States, Pennsylvania
Children's Hospital of Philadelphia Recruiting
Philadelphia, Pennsylvania, United States, 19104
Sponsors and Collaborators
Children's Hospital of Philadelphia
Principal Investigator: Athena Zuppa, MD Children's Hospital of Philadelphia
  More Information

No publications provided

Responsible Party: Children's Hospital of Philadelphia Identifier: NCT01394718     History of Changes
Other Study ID Numbers: 11-08095
Study First Received: July 13, 2011
Last Updated: February 11, 2015
Health Authority: United States: Institutional Review Board

Keywords provided by Children's Hospital of Philadelphia:
analgesic adjunct
spine fusion surgery
opiate reduction
pain management after elective surgical operation

Additional relevant MeSH terms:
Pain, Postoperative
Pathologic Processes
Postoperative Complications
Signs and Symptoms
Analgesics, Non-Narcotic
Central Nervous System Agents
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Sensory System Agents
Therapeutic Uses processed this record on March 03, 2015