Document Detail

Exercise induced ventricular ectopics in patients with isolated congenital complete heart block and their association with inadequate chronotropy.
MedLine Citation:
PMID:  6207069     Owner:  NLM     Status:  MEDLINE    
Treadmill exercise tests preformed on 13 patients with isolated congenital complete heart block are described. Premature ventricular contractions appeared with exercise in 5/13 patients. The 5 patients who developed ventricular ectopics with exercise had lesser increments in their junctional rates with exercise as compared to the remaining patients (P less than .025). Two of these 5 patients subsequently experienced syncope and required pacemaker insertion. The two groups of patients were indistinguishable in terms of age, sex, resting heart rates, presence or absence of cardiomegaly. The site of AV block appeared to be above the bundle of His in all instances (proven in 9/13). It is suggested that the association between ventricular ectopic activity and inadequate chronotropy with exercise could have a pathophysiological link and might indicate an unfavorable prognosis.
M Serratto; K K Chawla; R Miller
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Giornale italiano di cardiologia     Volume:  14     ISSN:  0046-5968     ISO Abbreviation:  G Ital Cardiol     Publication Date:  1984 Jun 
Date Detail:
Created Date:  1984-11-09     Completed Date:  1984-11-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  1270331     Medline TA:  G Ital Cardiol     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  387-94     Citation Subset:  IM    
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MeSH Terms
Cardiac Complexes, Premature / physiopathology*
Follow-Up Studies
Heart Block / congenital,  physiopathology*
Heart Function Tests
Heart Rate
Myocardial Contraction
Oxygen Consumption
Physical Exertion

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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