Why the study?
Does atenolol prevent positive responses during repeat head-up tilt test in adults with vasovagal syncope or presyncope?
Observational (n=43)
No
Does atenolol prevent positive responses during repeat head-up tilt test in adults with vasovagal syncope or presyncope?
Repeat head-up tilt testing while on beta-blocker therapy can identify a subset of vasovagal syncope patients (especially younger individuals) who do not respond to or may worsen with beta-blockers.
Atenolol yielded negative repeat tilt responses in most patients; hypothesis-generating for identifying nonresponders, prospective trials needed.
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Park et al. (1997) conducted an observational in Vasovagal syncope or presyncope (n=43). Atenolol vs. Baseline (initial head-up tilt test off beta-blocker) was evaluated on Negative response (prevention of symptoms) during repeat head-up tilt test.
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