Document Detail

Diagnostic usefulness of graded exercise testing in pediatric supraventricular tachycardia.
MedLine Citation:
PMID:  19584970     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Episodic symptoms, often reported during exertion, complicate the assessment of suspected supraventricular tachycardia (SVT).
OBJECTIVE: To examine the diagnostic sensitivity of graded exercise testing in young patients with documented SVT or ventricular preexcitation.
METHODS: A single-centre retrospective review identified 53 patients (5.1 to 17.5 years of age) with structurally normal hearts who had undergone 65 graded treadmill exercise tests in the setting of either documented SVT with normal resting electrocardiograms (n=30) or ventricular preexcitation (n=23). Twenty-five patients (13 pre-excited and 12 nonpreexcited) had exercise-related symptoms. SVT induction during exercise testing was assessed in relation to pre-excitation and the patient's history of exercise-induced symptoms.
RESULTS: SVT was induced during six of the 65 exercise tests performed in three of 53 patients (overall sensitivity 5.7%). All three patients had a history of exercise- induced symptoms, and two had ventricular preexcitation. SVT was induced in 12% of patients with exercise- related symptoms. No other rhythm disturbances occurred during exercise testing.
CONCLUSION: The diagnostic yield of graded exercise testing in patients with suspected SVT is limited, even among those with exercise related symptoms.
David E Draper; Niels G Giddins; Joy McCort; Gil J Gross
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Canadian journal of cardiology     Volume:  25     ISSN:  1916-7075     ISO Abbreviation:  Can J Cardiol     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-07-08     Completed Date:  2009-07-31     Revised Date:  2013-06-02    
Medline Journal Info:
Nlm Unique ID:  8510280     Medline TA:  Can J Cardiol     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  407-10     Citation Subset:  IM    
Variety Children's Heart Centre, Winnipeg Children's Hospital, Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba.
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MeSH Terms
Child, Preschool
Exercise Test*
Physical Exertion*
Pre-Excitation Syndromes / physiopathology
Retrospective Studies
Tachycardia, Supraventricular / diagnosis*,  physiopathology

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