AORTIC VALVE RECONSTRUCTION SURGERY USING AUTOLOGOUS PERICARDIUM: THE
EXPERIENCE IN VIETNAM
Abstract
Objective: The study aimed to evaluate the indications
and describe the aortic valve reconstruction techniques by Ozaki’s
procedure in Vietnam and report mid-term outcomes of this technique in
Vietnam. Methods: Between June 2017 and December 2019,
72 patients diagnosed with isolated aortic valve disease, with a mean
age of 52.9 (19 – 79 years old), and a male:female ratio of 3:1
underwent aortic valve reconstruction surgery by Ozaki’s technique at
Cardiovascular Center, E Hospital, Vietnam. Results: The
aortic valve diseases consisted of aortic stenosis (42%), aortic
regurgitation (28%), and a combination of both (30%). In addition, the
proportion of aortic valves with bicuspid morphology and small annulus
(≤ 21 mm) was 28% and 38.9%, respectively. The mean aortic cross-clamp
time was 106 ± 13.8 minutes, mean cardiopulmonary bypass time was 136.7
± 18.5 minutes, and 2.8% of all patients required conversion to
prosthetic valve replacement surgery. The mean follow-up time was 26.4
months (12- 42 months), the survival rate was 95.8%, the reoperation
rate was 2.8%, and rate of postoperative moderate or higher aortic
valve regurgitation was 4.2%. Postoperative valvular hemodynamics was
favorable, with a peak pressure gradient of 16.1 mmHg and an effective
orifice area index of 2.3 cm 2.
Conclusions: This procedure was safe and effective, with
favorable valvular hemodynamics and a low rate of valvular degeneration.
However, more long-term follow-up data are needed.