Exercise Capacity and Pulmonary Function in Pediatric Patients With Anomalous Pulmonary Venous Connection...

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease
• Pulmonary Medicine

Background:

• Anomalous pulmonary venous connection (APVC) is a congenital heart defect affecting pulmonary vein drainage.
• Surgical repair improves survival but long-term cardiopulmonary effects are not fully understood.

Purpose of the Study:

• To evaluate exercise capacity and pulmonary function in pediatric patients after APVC repair.
• To compare functional outcomes between APVC patients and healthy controls.

Main Methods:

• Retrospective study of 26 pediatric APVC patients (17 total APVC, 9 partial APVC) and 63 age-matched controls.
• Cardiopulmonary exercise testing (CPET) was used to assess exercise capacity.
• Exclusion of patients with complex defects or significant comorbidities.

Main Results:

• APVC patients demonstrated significantly lower anaerobic threshold VO2, peak VO2, and peak heart rate compared to controls.
• No significant differences in exercise capacity were observed between TAPVC and PAPVC subgroups.
• Resting lung function was preserved in the APVC group.

Conclusions:

• Repaired APVC in children is associated with persistent exercise limitations, despite normal resting lung function.
• Routine functional assessment and potential rehabilitation are crucial for managing these patients.
• Further research is needed to elucidate the mechanisms behind these limitations and guide long-term care.