Annals of Pediatric Cardiology (Jan 2018)

Percutaneous balloon dilatation for congenital aortic stenosis during infancy: A 15-year single-center experience

  • Abdulraouf M Z Jijeh,
  • Muna Ismail,
  • Aisha Al-Bahanta,
  • Ahmed Alomrani,
  • Omar Tamimi

DOI
https://doi.org/10.4103/apc.APC_171_17
Journal volume & issue
Vol. 11, no. 2
pp. 143 – 147

Abstract

Read online

Background: Congenital aortic stenosis (AS) is a rare disease. Treatment options for newborns are challenging. Newborns may have higher reintervention rate and mortality. Objectives: The study aimed to identify the factors predictive of reintervention following balloon aortic valvuloplasty (BAV) for AS during infancy. Methods: Retrospectively, between 2001 and 2016, echocardiography (echo) and cardiac catheterization data for infants with AS were analyzed, including follow-ups and reinterventions. Percentage reduction was defined as the ratio between the drop of aortic valve (AV) peak gradient and the baseline peak gradient. Results: Sixty infants were included and 48 were followed up. Sixteen (27%) patients were neonates. Peak-to-peak gradient at AV was 64 ± 27 mmHg, which was reduced to 27 ± 13 mmHg. Percentage reduction was 53% ±24%. Forty-nine (82%) patients had adequate results (residual AV gradient <35 mmHg). There was no significant aortic insufficiency (AI) before procedure, while 6 (10%) patients had increased AI immediately after BAV. Of 48 patients, 14 (29%) required an additional BAV. Of 48 patients, 8 (17%) required surgical interventions following BAV. Reintervention was associated more with small left ventricular outflow tract (LVOT), high residual AV, and low percentage reduction. Mortality was 8.3%. Conclusions: BAV in infancy has a reasonable success rate (82%) with high rate of reintervention. Patent ductus arteriosus-dependent neonates carried the highest risk of mortality. Small LVOT, high AV residual gradient, and low percentage reduction resulted in more reinterventions.

Keywords