Does heart-type fatty acid-binding protein predict clinical outcomes after pediatric cardiac surgery?

Area of Science:

• Biochemistry
• Cardiology
• Pediatric Surgery

Background:

• Early identification of vulnerable pediatric cardiac surgery patients is essential for timely clinical support.
• Heart-type fatty acid-binding protein (H-FABP) is a recognized early biomarker for adult myocardial injury.
• This study investigates H-FABP's utility in pediatric cardiac surgery.

Purpose of the Study:

• To evaluate the correlation between postoperative H-FABP levels and clinical outcomes in pediatric cardiac surgery.
• To compare the predictive value of H-FABP with established biomarkers like CK-MB and troponin-I.
• To assess the relationship between H-FABP and intraoperative parameters such as bypass time.

Main Methods:

• Measurements of H-FABP, troponin-I, and CK-MB were taken preoperatively and at 1, 3, and 6 hours post-aortic declamping in 32 pediatric patients undergoing ventricular septal defect closure.
• Spearman's Rho correlations were used to analyze relationships between laboratory markers and clinical outcomes.
• Clinical parameters included inotropic support duration, aortic cross-clamp time, total bypass time, ventilation-weaning time, and ICU stay.

Main Results:

• Postoperative H-FABP, CK-MB, troponin-I, and total bypass time demonstrated weak to moderate correlations with clinical outcome measures.
• No significant difference in predictive capability was observed among these parameters.

Conclusions:

• The predictive value of H-FABP for clinical outcomes in pediatric cardiac surgery is comparable to that of CK-MB and troponin-I.
• H-FABP does not offer a stronger predictive advantage over existing biomarkers or bypass time in this patient population.