Journal Article

Parasympathetic-mediated atrial fibrillation during tilt test associated with increased baroreflex sensitivity

Renata Rodrigues Teixeira de Castro, Evandro Tinoco Mesquita and Antonio Claudio Lucas da Nobrega

in EP Europace

Published on behalf of European Heart Rhythm Association of the European Society of Cardiology (ESC)

Volume 8, issue 5, pages 349-351
Published in print May 2006 | ISSN: 1099-5129
Published online May 2006 | e-ISSN: 1532-2092 | DOI: http://dx.doi.org/10.1093/europace/eul024
Parasympathetic-mediated atrial fibrillation during tilt test associated with increased baroreflex sensitivity

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The autonomic mechanism that triggered atrial fibrillation in a patient during tilt test was investigated. Neurocardiogenic syncope is often characterized by diminished baroreflex sensitivity during the hypotension period. Increased barorereflex sensitivity preceding the onset of atrial fibrillation in tilt testing may indicate the involvement of a vagally mediated mechanism, as shown in the present case.

Keywords: Syncope; Atrial fibrillation; Tilt table test; Autonomic nervous system; Baroreflex sensitivity

Journal Article.  1529 words.  Illustrated.

Subjects: Cardiovascular Medicine

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