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Predicting an acute myocardial infarction (AMI), within the context of physicians’ or epidemiologists’ realms, is an important task. Accordingly, the recovery period after an exercise stress test has been subjected recently to scrutiny, with very fruitful results. Traditionally, the time after completion of an exercise stress test has been merely devoted to observing the patients for clinical symptoms, without much thought given to a possible diagnostic utility of information generated during the recovery period. However, in the past few years, diagnostically important data from the recovery period have been forthcoming. An early example was the observation that in >15% of patients subjected to exercise testing, electrocardiographic (ECG) ST-segment depression occurred only during recovery,1 a finding with a predictive value of significant coronary artery disease not different from that associated with ECG changes occurring during exercise. Also, recent work has documented a relationship between postexercise blunted drop of heart rate and subsequent morbidity and mortality.2–4In the same context, delayed decrease of the systolic blood pressure (SBP) during the recovery period after exercise has been linked recently to an increased risk of coronary heart disease, stroke, and emergence of hypertension.5–8 According to these new ideas, SBP and heart rate, at various designated time points during recovery,4–8 become new “risk factors,” and it is the task …

Blunted Decline in Systolic Blood Pressure After Exercise Predicts Future Acute Myocardial Infarction