Key result
Exercise-induced syncope signals high cardiovascular risk, whereas post-exercise episodes are typically benign reflex events.
Why the study?
Exercise-associated syncope is clinically important because it may reflect benign physiological mechanisms or represent the initial manifestation of a potentially life-threatening cardiovascular disorder.
Syncope during exercise warrants prompt cardiovascular evaluation to exclude structural or arrhythmic causes, whereas post-exercise syncope is typically reflex-mediated and benign.
Supports urgent evaluation for intr-exercise syncope; leaves open need for prospective validation of risk stratification.
Syncope is a common clinical condition characterized by a transient loss of consciousness caused by temporary global cerebral hypoperfusion. Exercise-associated syncope is clinically important because it may reflect benign physiological mechanisms or represent the initial manifestation of a potentially life-threatening cardiovascular disorder. This narrative review examines current evidence on its epidemiology, pathophysiology, classification, diagnostic evaluation, differential diagnosis, and management. The reviewed evidence indicates that syncope occurring during exercise should be considered a high-risk presentation requiring prompt cardiovascular evaluation, whereas post-exercise episodes are more frequently associated with reflex mechanisms and impaired venous return. Initial assessment should include a detailed history, physical examination, orthostatic blood pressure measurement, and 12-lead electrocardiography, with echocardiography, exercise testing, ambulatory rhythm monitoring, or head-up tilt testing selected according to the suspected mechanism. Head-up tilt testing is most useful when reflex syncope remains suspected after the initial evaluation. A structured, risk-based diagnostic approach is therefore recommended to identify cardiac causes early while avoiding unnecessary testing in patients with likely benign syncope.
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Asteguieta et al. (2026) conducted a review in Exercise-associated syncope. Diagnostic evaluation including head-up tilt test was evaluated. Syncope occurring during exercise should be considered a high-risk presentation requiring prompt cardiovascular evaluation, whereas post-exercise episodes are more frequently associated with benign reflex mechanisms.
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