JACC. Case reports · 2026
Loss of Consciousness During Intense Exercise: Is It Hypotension or Not?
Клинический случайСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Leahy Michael G, Manferdelli Giorgio, Hedge Eric T, Patel Keval D, Whitham Jennifer K, Levine Benjamin D
Аннотация
BACKGROUND: An 18-year-old female middle-distance runner was referred for loss of consciousness (LOC) during races.
CASE SUMMARY: A treadmill exercise test was completed with direct, continuous measures of arterial blood pressure. We were able to elicit LOC during maximal exertion on 2 occasions. Beat-by-beat arterial pressure demonstrated that the LOC occurred despite having normal exercising blood pressure.
DISCUSSION: We demonstrate an instructive case in which LOC during maximal exertion may be a consequence of an athlete exercising outside of their physiological limits in the absence of hypotension, causing cerebral hypoperfusion and subsequent syncope.
TAKE-HOME MESSAGE: In highly motivated athletes, LOC may occur during maximal exercise in the absence of hypotension.
CASE SUMMARY: A treadmill exercise test was completed with direct, continuous measures of arterial blood pressure. We were able to elicit LOC during maximal exertion on 2 occasions. Beat-by-beat arterial pressure demonstrated that the LOC occurred despite having normal exercising blood pressure.
DISCUSSION: We demonstrate an instructive case in which LOC during maximal exertion may be a consequence of an athlete exercising outside of their physiological limits in the absence of hypotension, causing cerebral hypoperfusion and subsequent syncope.
TAKE-HOME MESSAGE: In highly motivated athletes, LOC may occur during maximal exercise in the absence of hypotension.