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

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...

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Bibliographic Details
Published in:	Europace (London, England) Vol. 8; no. 5; pp. 349 - 351
Main Authors:	de Castro, Renata Rodrigues Teixeira, Mesquita, Evandro Tinoco, da Nobrega, Antonio Claudio Lucas
Format:	Journal Article
Language:	English
Published:	England Oxford Publishing Limited (England) 01-05-2006
Subjects:	Aged Atrial Fibrillation - physiopathology Autonomic Nervous System - physiopathology Baroreflex - physiology Female Humans Syncope, Vasovagal - physiopathology Tilt-Table Test
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Case Study-2 ObjectType-Feature-4 ObjectType-Report-1 ObjectType-Article-3
ISSN:	1099-5129 1532-2092
DOI:	10.1093/europace/eul024