“…Therefore, combined organic stenosis is one of the important prognostic factors for patients with VSA. Many studies have shown that the extent and severity of combined atherosclerotic coronary artery disease (CAD) was one of the independent prognostic factors of cardiovascular outcome in VSA patients [ 5 , 13 , 17 , 22 , 24 , 37 ]. In a study that followed 169 VSA patients, survival for patients with multi-vessel disease was 81%, 76%, and 66%; for patients with one-vessel disease, 97%, 92%, and 92%; and for patients without significant stenosis, 98%, 98%, and 98% at 1, 2, and 3 years, respectively [ 13 ].…”