Key result
Tilt table testing and carotid sinus compression identify neurally-mediated syncope in ~39% of unexplained cases.
Population
Patients presenting with syncope in the emergency room
Design
Review
Authors
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Supports tilt table testing in unexplained syncope; leaves open whether testing improves outcomes in prospective studies.
Non-invasive provocation tests like the tilt table test and carotid sinus compression are useful in diagnosing neurally-mediated syncope, which accounts for a significant proportion of emergency room syncope presentations.
Shingo Hori (1994) conducted a review in Syncope (n=379). Tilt table test and carotid sinus compression was evaluated on Positive response to tilt table test or carotid sinus compression. In patients with syncope of unknown etiology, tilt table testing or carotid sinus compression was positive in 39%, indicating that neurally-mediated syncope accounts for a significant number of cases.