Elevated risk of thrombosis in neonates undergoing initial palliative cardiac surgery

Area of Science:

• Pediatric Cardiology
• Neonatal Surgery
• Thrombosis Research

Background:

• Thrombotic events significantly impact morbidity and mortality in pediatric patients with complex congenital cardiac disease.
• Neonates undergoing initial surgical palliation for single ventricle physiology are at high risk.
• Understanding coagulation and inflammation markers is crucial for managing thrombotic risk.

Purpose of the Study:

• To prospectively evaluate the incidence of thrombosis in neonates undergoing initial palliative surgery.
• To examine preoperative and postoperative laboratory tests of coagulation and inflammation.
• To identify factors associated with thrombotic events in this vulnerable population.

Main Methods:

• Prospective study of neonates (<30 days) requiring initial surgical palliation.
• All subjects received aspirin postoperatively.
• Thrombosis diagnosis via echocardiograms, vascular imaging, and cardiac catheterizations.

Main Results:

• 28% of surviving neonates and 12.5% of those who died experienced thrombosis.
• Preoperative coagulation markers (e.g., factors II, V, VII, VIII, X, antithrombin, protein C) were significantly lower than in healthy children.
• Elevated preoperative C-reactive protein (CRP) was significantly associated with an increased risk of thrombotic events (p=0.02).

Conclusions:

• Thrombotic complications are common in neonates undergoing initial palliative cardiac surgery.
• Aspirin therapy alone may be insufficient for preventing thrombosis in this group.
• Elevated preoperative CRP is a significant predictor of increased thrombotic risk.