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Volume 353:734-735 August 18, 2005 Number 7
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Heart-Rate Profile during Exercise as a Predictor of Sudden Death

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 by Jouven, X.
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To the Editor: The study by Jouven and colleagues (May 12 issue)1 advances our understanding of the factors involved in the precipitation of sudden death. However, the authors' assertion that exercise-induced changes in heart rate "may have clinical implications in terms of the early identification of high-risk subjects" is untenable given the very low incidence of sudden death in their studied population. Only 1.4 percent of the 5713 healthy middle-aged men died suddenly during the 23-year follow-up. On the basis of the criterion the investigators found most discriminating — subnormal exercise-induced increase in heart rate — 500 men would have . . . [Full Text of this Article]




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