**NYHA**

Patient with heart disease, without limitations of physical activity.

Patient with disease, with slight limitation ofordinary physical activity, fatigue, palpitations, designs or angina pain.

Patient with heart disease, with noticeable limitation of physical activity, less than the ordinary physical activity, cause tires, palpitations design or pain angina.

Patient with heart disease, incapacity to walk and physical activity, symptoms of cardiac insufficiency, angina.

There are over 100 studies of perioperatory risk-prognosis stratification that have tried to identify adverse predictive factors, the greater limitation of these studies is that they were realized in a single institution, small groups, or the cardiac experience of the anesthesiologistwas the one taken into account. Between the preoperative risk-prognosis classifying stratification, transoperatory and post-operative factor risks are the following scales: Parsonnet, Tumman, Higgins, Tu, Hannan, Connor, Cleveland Clinic, EuroSCORE, Ontario Provincial Risk (OPR) among others, which vary in predicting correlation of risk of morbidity and mortality in relation to distribution of patients by risk, the average one hoped, and the averageobservada.10, 11.12.13 (**Chart 3**)
