Background: The main signs of cardiac disease (particularly the coronary disease) was chest pain and the shortness of breath. ETT is a prognostic and diagnostic tool for assessing the ischemic heart patients. The aim of present study was to determine the results of applicating ETT for patients with typical and atypical chest pain complaints referring to the Mazandaran Cardiac Center 2007.

Materials and Methods: This descriptive study was conducted on 500 patients with typical and non Typical pain referring to the heart centers of Mazandaran province. After the interview, examination and laboratory tests, attended by the researcher and cardiologist, the patients under went ETT (Exercise Tolerance Test) with Tread mill according to Bruce protocol (Bruce Protocol) in four steps.

Results: The present study showed the positive effect of exercise test in 80(16%) of cases. The positive test results of exercise test in the cases with typical heart pain was 25 times more than the cases with atypical heart pain. 43(53.75%) of the cases with positive test were male the majority of whom were (41caseses,51.25%) in age range of 51-65 years. 12.5% of cases with positive test and also 78.6% with negative test had atypical pain.

Conclusion: getting serious signs and symptoms of various disease serious (especially of the typical and atypical chest pain) is among the main educational priorities for the prevention of cardiac infarction.