title: Long term outcomes of surgical revascularization for isolated left main coronary artery stenosis: a single-center surveillance study.
abstract: OBJECTIVE
  The objective of this study was to retrospectively analyze the clinical course and postoperative long-term survival of patients diagnosed with isolated left main coronary artery (LMCA) stenosis after surgical revascularization.
  
  
  METHODS
  A total of 38 patients (27 males, 11 females) who were diagnosed with isolated LMCA stenosis and underwent surgical revascularization were enrolled in the study. Isolated LMCA stenosis was classified into 2 groups: ostial stenosis and nonostial stenosis. Coronary events were defined as death of cardiac origin, the need for a new myocardial revascularization procedure, or the occurrence of myocardial infarction in the course of follow-up. The postoperative assessment period included short- and long-term follow-up. The study endpoint was defined as all-cause mortality.
  
  
  RESULTS
  Among the 38 patients who participated in the study, 25 suffered from ostial LMCA stenosis. The early postoperative mortality rate before hospital discharge was 2.6%. Median duration of postoperative long-term follow-up was 73.43 months (range: 0.17-187.23). Median duration of long-term follow-up free from coronary events or percutaneous coronary interventions was 73.43 months. Postoperative 2-year survival rate was 97.4%, and 5-year survival rate was 92.1%. The postoperative survival period and period free of coronary events of patients with isolated ostial LMCA stenosis did not differ significantly from those of patients with nonostial stenosis (p=0.801, p=0.970, respectively).
  
  
  CONCLUSIONS
  Postoperative short- and long-term prognosis of isolated LMCA stenosis appears good in terms of mortality and coronary event symptoms.
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey. yalchinveliyev@gmail.com.
authors.forename: Yalçın
authors.initials: Y
authors.lastname: Velibey
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Eyüp
authors.initials: E
authors.lastname: Tusun
authors.affiliation: Department of Cardiology, Edirne State Hospital, Edirne, Turkey.
authors.forename: Servet
authors.initials: S
authors.lastname: Altay
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Nijat
authors.initials: N
authors.lastname: Bakshaliyev
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Karaca
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Özge
authors.initials: Ö
authors.lastname: Güzelburç
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Nihat
authors.initials: N
authors.lastname: Özer
authors.affiliation: Department of Cardiology, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Eren
authors.affiliation: Department of Cardiovasculary Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: Serap
authors.initials: S
authors.lastname: Aykut Aka
authors.affiliation: Department of Cardiovasculary Surgery, Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, İstanbul, Turkey.
authors.forename: İbrahim
authors.initials: İ
authors.lastname: Yekeler
mesh_terms: D000368:Aged; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000453:epidemiology* / Q000401:mortality / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000009:adverse effects* / Q000401:mortality*; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome