Correlation between QRS Duration, Pulmonary Insufficiency and Right Ventricle Performance in Totally Corrected Tetralogy of Fallot
Iranian Journal of Pediatrics: October 31, 2013, 23 (5); 593-596
August 14, 2013
Article Type: Rapid Communication
November 27, 2012
July 13, 2013
K , Tanasan
A, K. Payravian
S. Correlation between QRS Duration, Pulmonary Insufficiency and Right Ventricle Performance in Totally Corrected Tetralogy of Fallot ,
Iran J Pediatr.
Objective: Despite progresses in surgical correction of Tetralogy of Fallot, pulmonary insufficiency and progressive dysfunction of the right ventricle impress its long-term prognosis. In this study we examined the correlations between QRS duration, pulmonary insufficiency and right ventricular performance index.
Methods: We enrolled 57 repaired Tetralogy of Fallot patients. QRS duration on electrocardiogram, pulmonary regurgitation index (regurgitation time to diastolic time ratio), and right ventricular myocardial performance index were measured.
Findings: There was a strong inverse correlation between QRS duration and pulmonary regurgitation index. However, significant correlation did not exist between QRS duration and right ventricular myocardial performance index. QRS duration ≥160 ms predicted severe pulmonary regurgitation with 100% sensitivity and 87% specificity.
Conclusion: Increased QRS duration can predict severity of pulmonary regurgitation.
Tetralogy of Fallot; Pulmonary Regurgitation; Pulmonary Insufficiency; Ventricular Performance; ECG; QRS Complex
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