A continuous heparin infusion does not prevent catheter-related thrombosis in infants after cardiac surgery.
2010
OBJECTIVE: To determine whether a continuous infusion of heparin reduces the rate of catheter-related thrombosis in neonates and infants post cardiac surgery. Central venous and intracardiac catheters are used routinely in postoperative pediatric cardiac patients. Catheter-related thrombosis occurs in 8% to 45% of pediatric patients with central venous catheters. DESIGN: Single-center, randomized, placebo-controlled, double-blinded trial. SETTING: Cardiovascular intensive care unit, university-affiliated children's hospital. PATIENTS: Children or = 7 days had both a greater risk of thrombus formation (odds ratio, 4.3; p = .02) and catheter malfunction (odds ratio, 11.2; p = .008). We observed no significant differences in other outcome measures or in the frequency of adverse events. CONCLUSIONS: A continuous infusion of heparin at 10 units/kg/hr was safe but did not reduce catheter-related thrombus formation. Heparin at this dose caused an increase in partial thromboplastin time values, which, unexpectedly, was more pronounced in neonates.
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