Document Detail

A standardized conventional evaluation of the mechanism of syncope in patients with bundle branch block.
MedLine Citation:
PMID:  12408253     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The finding of bundle branch block in patients with syncope suggests that paroxysmal AV block may be the cause of syncope, even though its prevalence is unknown. METHODS: We evaluated 55 consecutive patients with syncope and bundle branch block (mean age 75 +/- 8 years; median of two syncopal episodes per patient) referred to three Syncope Units. The hierarchy and appropriateness of diagnostic tests and the definitions of the final diagnoses followed standardized predefined criteria. RESULTS: Cardiac syncope was diagnosed in 25 patients (45%): AV block in 20, sick sinus syndrome in 2, sustained ventricular tachycardia in 1, aortic stenosis in 2. Neurally mediated syncope was diagnosed in 22 (40%): carotid sinus syndrome in 5, tilt-induced syncope in 15, adenosine-sensitive syncope in 2. Syncope remained unexplained in 8 (15%). CONCLUSIONS: Less than half of the patients with bundle branch block have a final diagnosis of cardiac syncope; in these patients, paroxysmal AV block is the most frequent but not the only mechanism supposed.
P Donateo; M Brignole; P Alboni; C Menozzi; A Raviele; A Del Rosso; M Dinelli; A Solano; N Bottoni; F Croci
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology     Volume:  4     ISSN:  1099-5129     ISO Abbreviation:  Europace     Publication Date:  2002 Oct 
Date Detail:
Created Date:  2002-10-31     Completed Date:  2003-02-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  100883649     Medline TA:  Europace     Country:  England    
Other Details:
Languages:  eng     Pagination:  357-60     Citation Subset:  IM    
Department of Cardiology, Ospedali Riuniti, Lavagna, Italy.
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MeSH Terms
Bundle-Branch Block / complications*
Heart Function Tests
Syncope / diagnosis,  etiology*,  physiopathology*

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