Balloon pulmonary valvuloplasty: A systematic review.

Area of Science:

• Cardiology
• Pediatric Cardiology
• Interventional Cardiology

Background:

• Pulmonary stenosis (PS) is a significant congenital heart defect.
• Balloon pulmonary valvuloplasty (BPV) is a primary intervention for valvar PS.
• Understanding factors influencing BPV outcomes is crucial for patient management.

Approach:

• Review of evidence on immediate and long-term outcomes of BPV.
• Analysis of factors contributing to recurrent pulmonary stenosis.
• Evaluation of strategies to mitigate long-term complications like pulmonary insufficiency.

Key Points:

• BPV provides immediate and sustained relief of pulmonary valve obstruction.
• Infundibular obstruction may develop in severe PS cases or older patients.
• Recurrent stenosis occurs in ~10% of patients, linked to low balloon/annulus ratio and high post-BPV gradients.
• Repeat BPV with larger balloons can address recurrent stenosis.
• Long-term follow-up reveals pulmonary insufficiency in some patients, potentially requiring valve replacement.

Conclusions:

• BPV is the preferred treatment for valvar PS.
• Optimizing the balloon/annulus ratio to 1.2-1.25 is recommended.
• Developing strategies to prevent or reduce long-term pulmonary insufficiency is essential.