The main outcome measures were 30-days mortality rate and major postoperative complication rate. Results: Comorbidities include: hypertension is 47.4%; ischemic myocardial disease is 63.2%; old myocardial infarction is 10.5%; myocardial ischemia 10.5%; valvulopathies is 15.6%; stroke 10.5%; stenosis carotid 10.5%; smoke is 52.7%; diabetes is 10.5%; COPD is 15.8%, renal failure is 10.5%; dyslipidemia is 26.3%.