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Updated: Jul 14, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
Published on: October 12, 2012
Enoxaparin therapy for arterial thrombosis in infants with congenital heart disease
Joe Bontadelli1, Alexander Moeller, Markus Schmugge
1Division of Pediatrics, University Children's Hospital, Steinwiesstrasse 75, 8032 Zurich, Switzerland.
Insights
Enoxaparin effectively treats arterial thrombosis in infants with congenital heart disease. This study found it safe and efficient, with 91% thrombosis resolution and minimal bleeding complications.
Area of Science:
- Pediatric Cardiology
- Neonatal Thrombosis Management
- Pharmacology
Background:
- Catheter-related arterial thrombosis is a serious complication in infants with congenital heart disease.
- Current treatment often involves unfractionated heparin, but alternatives are being explored.
Purpose of the Study:
- To evaluate the efficacy and safety of enoxaparin in treating catheter-related arterial thrombosis in infants with congenital heart disease.
Main Methods:
- A prospective observational study was conducted in a pediatric intensive care and cardiology unit.
- 32 infants (0-12 months) with catheter-related arterial thrombosis received enoxaparin.
- Dose requirements, thrombosis resolution via Doppler ultrasound, and bleeding complications were assessed.
Main Results:
- Complete resolution of thrombosis occurred in 91% of infants within a mean of 23 days.
- Newborns required higher enoxaparin doses than older infants to achieve therapeutic levels.
- Only one infant (3%) experienced bleeding complications.
Conclusions:
- Enoxaparin demonstrates high efficacy and safety for treating catheter-related arterial thrombosis in this pediatric population.
- It may serve as a viable alternative to unfractionated heparin for these patients.
Objective:
To investigate efficacy and safety of enoxaparin for catheter-related arterial thrombosis in infants with congenital heart disease.
Design:
Prospective observational study.
Setting:
Pediatric Intensive Care and Cardiology Unit at the University Children's Hospital of Zurich.
Patients:
A cohort of 32[Symbol: see text]infants aged 0-12[Symbol: see text]months treated with enoxaparin for catheter-related arterial thrombosis from 2002 to 2005.
Measurements:
Dose requirements of enoxaparin, resolution of thrombosis by Doppler ultrasound, and bleeding complications.
Results:
Catheter-related arterial thrombosis was located in the iliac/femoral arteries in 31 (97%) infants and aorta in 1 infant, and was related to indwelling catheters and cardiac catheterization in 17 (53%) and 15 (47%) cases, respectively. Newborns required increased doses of enoxaparin to achieve therapeutic anti-FXa levels (mean 1.62[Symbol: see text]mg/kg per dose) compared with infants aged 2-12 months (mean 1.12 mg/kg per dose; p=0.0002). Complete resolution of arterial thrombosis occurred in 29 (91%) infants at a mean of 23 days after initiation of enoxaparin therapy. Partial or no resolution was observed in 1 (3%) and 2 (6%) infants, respectively, at a mean follow-up time of 4.3 months. Bleeding complications occurred in 1 (3%) infant.
Conclusion:
Enoxaparin is efficient and safe for infants with congenital heart disease and catheter-related arterial thrombosis, possibly representing a valid alternative to the currently recommended unfractionated heparin.
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