Document Detail

Exaggerated valsalva maneuver may explain stretch syncope in an adolescent.
MedLine Citation:
PMID:  22000317     Owner:  NLM     Status:  In-Data-Review    
We describe cardiovascular responses during the Valsalva maneuver and syncope in the youngest reported patient with stretch syncope, which was induced by neck stretching and back hyperextension. The pattern of cardiovascular responses during stretch syncope was similar to that during a pathologic Valsalva maneuver, indicating adrenergic dysfunction in this patient. These findings indicate that the underlying mechanisms of these two processes are not fundamentally different, and that adrenergic dysfunction observed during the Valsalva maneuver may have resulted in stretch syncope in this patient. However, a simple Valsalva maneuver should not have sufficed to precipitate these episodes, because no syncope or significant hypotension occurred during the Valsalva maneuver. Thus, we suggest that additional factors, such as mechanical compression of vessels or physiologic responses to orthostasis, were aggravated during pathologic Valsalva maneuver responses, which were responsible for the stretch syncope observed.
Jung S Yeom; Youngsoo Kim; Jae Y Lim; Hyang O Woo; Hee-Shang Youn
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric neurology     Volume:  45     ISSN:  1873-5150     ISO Abbreviation:  Pediatr. Neurol.     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-10-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508183     Medline TA:  Pediatr Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  338-40     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Department of Pediatrics, Gyeongsang National University School of Medicine, Jinju, South Korea.
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