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Can Adenosine 5′-Triphosphate Be Used to Select Treatment in Severe Vasovagal Syndrome? by Daniel Flammang, Timothy Church, Marc Waynberger, Annick Chassing, and Mark Antiel Circulation Volume 96(4):1201-1208 August 19, 1997 Copyright © American Heart Association, Inc. All rights reserved.
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Tracings show typical normal responses to ATP test. Daniel Flammang et al. Circulation. 1997;96:1201-1208 Copyright © American Heart Association, Inc. All rights reserved.
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Typical abnormal response to ATP test (continuous tracing) shows a complete AV block of 15 seconds with two ventricular escape beats (phase [ph.] III) and a second-degree AV block of variable severity lasting 10.5 seconds (phase IV). Daniel Flammang et al. Circulation. 1997;96:1201-1208 Copyright © American Heart Association, Inc. All rights reserved.
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In phase III, 6% of normal subjects and 41% of symptomatic patients had cardiac pauses >10 seconds (P<.0001). Daniel Flammang et al. Circulation. 1997;96:1201-1208 Copyright © American Heart Association, Inc. All rights reserved.
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Actuarial curve of recurrence-free survival. Daniel Flammang et al. Circulation. 1997;96:1201-1208 Copyright © American Heart Association, Inc. All rights reserved.
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