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A stress test is an electrocardiographic medical examination which is usually used to diagnose and assess coronary insufficiency or angina pectoris. Over the years, its use has broadened, but cannot be performed in all patients suffering from heart disease pathologies because it may pose some risks due to the efforts involved in its execution. A static or ergonomic bicycle or treadmill is used, following a methodology of progression in the overload of the same according to an official protocol. The patient’s pulse rate, blood pressure, oxygen consumption and electrocardiographic modifications are monitored, as well as the clinical response to exertion (pain, fatigue).