| Laughter-Induced Syncope. | |
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MedLine Citation:
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PMID: 22314146 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Reported cases of syncope caused directly by laughter are rare. The common scenario described in a few reports involved episodes of fortuitous laughter, sometimes followed by a short prodrome of lightheadedness, facial flushing, and dizziness, followed by an episode of definite syncope. There were no seizure-like movements, automatisms, or bladder or bowel incontinence. After the syncopal episodes that were seconds in length, the patients regained consciousness, and at that point were fully-oriented. These episodes could recur in a similar situation with such laughter. Many of these patients subsequently underwent full syncope workups, without elucidating a primary cardiac or neurologic cause. In this review of laughter-induced syncope, we describe a patient of ours who fit these descriptions. This phenomenon is likely a subtype of benign Valsalva-related syncope, with autonomic reflex arcs coming into play that ultimately result in global cerebral hypoperfusion. Besides the Valsalva produced by a great fit of laughter, laughter itself has its own neuroendocrine and vasculature effects that may play a role. |
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Authors:
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Alexander J Kim; William H Frishman |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-6 |
Journal Detail:
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Title: Cardiology in review Volume: - ISSN: 1538-4683 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-8 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9304686 Medline TA: Cardiol Rev Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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*Dept. of Medicine, New York Medical College/Westchester Medical Center, Valhalla, NY. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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