Serial plasma BNP levels in assessing inadequate left ventricular decompression on ECMO

Area of Science:

• Pediatric Cardiology
• Cardiac Surgery
• Critical Care Medicine

Background:

• Complex single ventricle physiology presents significant surgical challenges.
• Postoperative complications, including cardiac arrest, necessitate advanced life support like ECMO.
• Monitoring cardiac function in neonates after complex cardiac surgery is crucial.

Purpose of the Study:

• To report a case of complex single ventricle physiology in an infant.
• To highlight the management of postoperative cardiac arrest with ECMO.
• To investigate the utility of brain natriuretic peptide (BNP) as a marker for left ventricular distension.

Main Methods:

• Case report of a female infant with complex single ventricle.
• Surgical interventions included shunt placement, PDA division, and LPA augmentation.
• Management involved ECMO support and left atrial cannula insertion for decompression.

Main Results:

• The infant experienced cardiac arrest post-surgery, requiring ECMO.
• Insertion of a left atrial cannula led to left ventricular decompression.
• Brain natriuretic peptide (BNP) levels showed acute improvement following decompression.

Conclusions:

• BNP levels may serve as an indicator of left ventricular stretch in infants.
• BNP monitoring could be a valuable tool for assessing left ventricular distension post-cardiac surgery.
• This case underscores the importance of monitoring hemodynamic parameters in critically ill pediatric cardiac patients.