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(Circulation. 2002;106:1684.)
© 2002 American Heart Association, Inc.

Clinical Investigation and Reports

Management of Vasovagal Syncope

Controlling or Aborting Faints by Leg Crossing and Muscle Tensing

From the Department of Internal Medicine, Academic Medical Center, University of Amsterdam, the Netherlands, and the Department of Medicine (M.L.), University of Wisconsin, Madison, Wisc.

Correspondence to W. Wieling, Academic Medical Center, Department of Internal Medicine, F4-221, Meibergdreef 9, 1105AZ, Amsterdam, The Netherlands. E-mail W.Wieling{at}amc.uva.nl

Background— Posture-related vasovagal syncope is by far the most frequent cause of transient loss of consciousness, and present pharmacological and cardiac pacing treatment remains unsatisfactory. A simple maneuver to prevent or diminish vasovagal reactions would be beneficial.

Methods and Results— Twenty-one patients with recurrent syncope (age 17 to 74 years, 11 males) who were referred for routine tilt-table testing and had a positive test were included. They were instructed to perform leg crossing and muscle tensing for at least 30 seconds at the onset of a tilt table-provoked impending faint. Continuously measured blood pressure and heart rate at nadir and during the maneuver were compared. Ten months after the test, a telephone follow-up was performed. The physical counter-maneuver, performed in 20 of 21 subjects, increased blood pressure and heart rate. Systolic blood pressure rose from 65±13 to 106±16 mm Hg (mean±SD, P<0.001), and diastolic blood pressure rose from 43±9 to 65±10 mm Hg (P<0.001). During the maneuver, prodromal symptoms disappeared in all patients, and none lost consciousness. After terminating the maneuver, symptoms did not return in 5 subjects during the test. At follow-up, 13 of 20 patients reported that they applied the maneuver in daily life and benefited from it.

Conclusions— Leg crossing combined with tensing muscles at the onset of prodromal symptoms can postpone and in some subjects prevent vasovagal syncope.

Key Words: blood pressure • syncope • tests • hemodynamics • pacemakers

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