Indications for partial left ventriculectomy in pediatric dilated cardiomyopathy

Area of Science:

• Pediatric Cardiology
• Cardiothoracic Surgery

Background:

• Dilated cardiomyopathy (DCM) in children presents significant management challenges, often progressing to end-stage heart failure.
• Limited therapeutic options exist for pediatric DCM when medical management is insufficient.

Purpose of the Study:

• To define the role and indications of partial left ventriculectomy (PLV) in pediatric patients with end-stage dilated cardiomyopathy (DCM).

Main Methods:

• Retrospective chart review of pediatric DCM patients treated between 1997 and 2000.
• Comparison of outcomes between patients who underwent PLV (PLV group) and those managed non-surgically (non-PLV group).
• Analysis of clinical data including preoperative status, cardiac dimensions, ejection fraction, and serum biomarkers.

Main Results:

• Two of four PLV patients remained well long-term; one underwent successful heart transplantation, and one died postoperatively.
• Non-PLV patients were managed with medical therapy or mitral valve replacement, with generally better cardiac function indicators.
• PLV group showed significantly higher cardiothoracic ratios, left ventricular diastolic dimensions, and serum brain natriuretic peptide levels compared to the non-PLV group.

Conclusions:

• Partial left ventriculectomy is indicated for select pediatric patients with end-stage DCM.
• PLV is most appropriate when medical therapy is ineffective and heart transplantation is unavailable.
• Preoperative status, particularly urgent vs. elective surgery, impacts outcomes in PLV patients.