Atrioventricular dissociation exacerbating posturally-induced syncope

We report a case of an 85-year-old patient with posturally-induced syncope in whom symptoms were reproduced during tilt table testing in conjunction with development of an accelerated junctional rhythm with isorhythmic atrio-ventricular (AV) dissociation. That loss of AV synchrony was crucial to dev...

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Veröffentlicht in:Journal of interventional cardiac electrophysiology 2001-06, Vol.5 (2), p.153-157
Hauptverfasser: SAMNIAH, Nemer, SAKAGUCHI, Scott, BENDITT, David G
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container_title Journal of interventional cardiac electrophysiology
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creator SAMNIAH, Nemer
SAKAGUCHI, Scott
BENDITT, David G
description We report a case of an 85-year-old patient with posturally-induced syncope in whom symptoms were reproduced during tilt table testing in conjunction with development of an accelerated junctional rhythm with isorhythmic atrio-ventricular (AV) dissociation. That loss of AV synchrony was crucial to development of hypotension and syncope was demonstrated during electrophysiologic testing in which both an accelerated junctional rhythm and an inducible atypical AV nodal re-entrant tachycardia (AVNRT) were induced. The accelerated junctional rhythm was accompanied by moderate hypotension with the patient in the supine posture, whereas blood pressure was well maintained during atypical AVNRT despite a much faster ventricular rate. Thus, symptomatic hypotension due to AV dissociation, presumably the result of transient autonomic disturbance, may be another manifestation of neurally-mediated syncope.
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subjects Aged
Aged, 80 and over
Biological and medical sciences
Headache. Facial pains. Syncopes. Epilepsia. Intracranial hypertension. Brain oedema. Cerebral palsy
Heart Block - complications
Humans
Male
Medical sciences
Nervous system (semeiology, syndromes)
Neurology
Syncope - etiology
Tachycardia, Atrioventricular Nodal Reentry - complications
title Atrioventricular dissociation exacerbating posturally-induced syncope
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