[Myocardial ischemia induced by exercise. Analysis of the recovery phase. Behavior of the rate-pressure normalization product in patients with fixed ischemic threshold and patients with variable ischemic threshold].

Traditionally, in patients with exercise-induced myocardial ischemia we analyze the stress-test by studying the behaviour of double product at ischemia. We recognize the presence of a functional component in the reduction of coronary-flow reserve if the double product at ischemia (DPI) varies in 3 stress-tests i.e.