Quadricuspid aortic valve is a rare cause of aortic insufficiency. We report two unusual cases of this valvular pathology associated with a dilatation of the aortic root. The mechanism leading to this valve incompetence is incompletely understood and is discussed in regard to these cases.
A symptom-limited exercise test performed before hospital discharge after uncomplicated myocardial infarction provides a significantly greater cardiovascular stress than does a low level test and is associated with an ischemic response nearly twice as frequently. The prognostic significance of a positive response at higher work loads has not been defined.
In patients with stable angina, a 1,000-calorie meal significantly reduced time to ischemia, time to angina and exercise tolerance because of a more rapid increase in myocardial oxygen demand with exercise. The extent and severity of exercise-induced ischemia were unchanged.
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