Population
40 patients with repaired tetralogy of Fallot, mean age 14.3 years, followed at a tertiary cardiac centre in…
Design
Cross-sectional
Follow-up
9.5 years (mean follow-up since surgical repair)
Key result
Right ventricular enlargement assessed by three-dimensional echocardiography significantly correlates with QRS duration (r=0.61, p<0.01), indicating mechanoelectrical interaction in repaired tetralogy of Fallot.
Authors
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Should not yet alter surveillance in repaired tetralogy of Fallot; leaves open causal links to arrhythmia risk.
Cross-Sectional (n=40)
No
Effect estimate: r = 0.61
p-value: p=<0.01
In patients with repaired tetralogy of Fallot, right ventricular enlargement correlates with QRS prolongation, and severe pulmonary regurgitation negatively impacts right ventricular global function.
Mohamed Y. Abd El Rahman (2000) conducted a cross-sectional in Repaired tetralogy of Fallot with pulmonary regurgitation (n=40). Severe pulmonary regurgitation and right ventricular enlargement vs. Mild to moderate pulmonary regurgitation was evaluated on Correlation between QRS duration and right ventricular end diastolic volume (r = 0.61, p=<0.01). Right ventricular enlargement assessed by three-dimensional echocardiography significantly correlates with QRS duration (r=0.61, p<0.01), indicating mechanoelectrical interaction in repaired tetralogy of Fallot.