The rate of early surgery was 2.4%, the rate of mild pulmonary regurgitation (grade 2) was 11.9%, and severe (grade 3) was 4.8%.
Tỉ lệ phẫu thuật lại sớm là 2,4%, tỉ lệ hở van ĐMP vừa (độ 2) là 11,9%, hở nặng (độ 3) là 4,8%.