Circulatory support in infants with post-cardiopulmonary bypass left ventricular dysfunction using a left ventricular...

Area of Science:

• Pediatric Cardiology
• Cardiovascular Surgery
• Biomedical Engineering

Background:

• Extracorporeal membrane oxygenation (ECMO) is commonly used for pediatric circulatory support after cardiopulmonary bypass.
• However, ECMO results are disappointing in infants with predominant left ventricular failure.

Observation:

• Three infants (<10 kg) with severe left ventricular dysfunction post-cardiac surgery were managed with a left ventricular assist device (LVAD).
• The LVAD provided circulatory support for weaning from bypass or managing postoperative dysfunction.
• Support duration ranged from 40 to 146 hours using a closed-loop system with a constrained vortex pump.

Findings:

• One infant recovered fully and was discharged.
• Another achieved circulatory recovery but sustained neurological damage.
• The third infant died from progressive left ventricular dysfunction.

Implications:

• LVADs are technically feasible and effective in small infants with left ventricular dysfunction after cardiac surgery.
• LVADs may be a more appropriate circulatory support option than ECMO for this specific patient group.
• Further research is warranted to optimize LVAD use in pediatric cardiac surgery.