Single-leaflet aortic valve reconstruction utilizing the Ozaki technique in patients with congenital aortic valve disease.

Evaluate outcomes of single leaflet aortic valve reconstruction using Ozaki sizer and template. Single institute retrospective analysis between August 2015 and August 2019. Thirty-three patients, median age 9.3 years and weight 29.2 kg underwent single leaflet Ozaki repair. Preoperative indications were: AR (n=17), AS (n=3) or AS/AR (n=13). Baseline anatomy was unicuspid (n=15), bicuspid (n=9) or tricuspid (n=9). Two patients had endocarditis. Prior interventions included balloon valvuloplasty (n=22) and aortic valve repair (n=9). Pre-op average native annulus diameter was 19.6mm and peak echo gradient was 36mmHg. Autologous pericardium, Photofix® and CardioCel® bovine pericardium were used in 26, 5, and 2 patients. Non-coronary sinus enlargement was required in 3 and aortic root reduction in 9 patients. Single leaflet reconstruction was done for the right coronary cusp (n=25), non-coronary cusp in (n=6) and left coronary cusp (n=2). Additional procedures were done in 30 patients. Median ICU and hospital LOS were 2.1 and 6.3 days. There were no early re-interventions or conversions to valve replacement and one unrelated mortality. At discharge, all patients had