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N-Acetylcysteine in Neonatal Congenital Heart Surgery (INACT Study)

NCT00374088 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 21

Last updated 2012-01-19

Study results available
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Summary

The purpose of this study is to determine whether intravenous N-acetylcysteine (also known as Acetadote), an antioxidant medication that has been used for years to treat Tylenol overdose, helps prevent heart dysfunction in the early postoperative period following congenital heart surgery. Children undergoing major heart surgery, such as the arterial switch operation, routinely develop temporary heart dysfunction in the first 12-24 hours after surgery. This heart dysfunction may be severe and contributes to an increased risk for death or prolonged hospitalization. Current standard treatments include intravenous medications such as dopamine, epinephrine, and vasopressin that support your child's blood pressure and heart function. Unfortunately, high doses of these medications have the potential to cause severe side effects including loss of fingers and toes, liver and kidney dysfunction, and heart rhythm abnormalities. Our goal is to find a way to reduce heart dysfunction after major heart surgery in order to promote a smoother postoperative period, and reduce the risks associated with heart operations in children.

Conditions

  • Transposition of Great Vessels
  • Congenital Heart Disease

Interventions

DRUG

N-acetylcysteine

Loading dose: Subjects randomized to IV NAC will receive a total loading dose of 100 mg/kg of 10% (100 mg/mL) solution. Acetadote is supplied as a 20% solution (200 mg/mL) and will be diluted 1:1 with an equal volume of D5W. The volume of the loading dose will be 1 mL/kg, anticipated to be 2.5-5 mL in our patient population. The loading dose will be administered over 1 hr beginning 1 hr prior to the patient's OR time. Subjects in the placebo group will receive 1 mL/kg of D5W over 1 hr. Maintenance infusion: Subjects randomized to IV NAC will receive an infusion of 10 mg/kg/hr of 10% (100 mg/mL) solution for 24 hrs, starting in the OR after weaning from CPB. Acetadote is supplied as a 20% solution (200 mg/mL) and will be diluted 1:1 with an equal volume of D5W. The volume of the maintenance infusion will be 0.1 mL/kg/hr, anticipated to be 0.25-0.5 mL/hr in our patient population. Subjects in the placebo group will receive 0.1 mL/kg/hr of D5W for 24 hrs.

DRUG

Placebo

D5W bolus prior to surgery and D5W infusion after surgery in an equal volume to the drug arm.

Sponsors & Collaborators

Principal Investigators

  • Ranjit M Aiyagari, MD · University of Michigan

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Max Age
3 Months
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2005-02-28
Primary Completion
2008-06-30
Completion
2008-06-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00374088 on ClinicalTrials.gov