Impact of aortic annular size on rate of reoperation for left ventricular outflow tract obstruction after repair of interrupted aortic arch and ventricular septal defect
Heart Septal Defects, Ventricular
Ventricular Outflow Obstruction
Neonatal single-stage repair for IAA/VSD achieves excellent survival. For the patients whose aortic annulus is greater than patient's weight (kg) + 1.5 mm, low reoperation rate for LVOTO is expected. For the patient whose aortic annulus is less than patient's weight + 1.5 mm, almost half of them needed reoperation. An LVOT bypass procedure (Yasui or Norwood) is recommended if the aortic annulus is less than the patient's weight + 1.0 mm.