Key result
Patients with a single right ventricle had significantly longer QRS durations than those with a single left ventricle at 1 year (78.9 vs 73.2 ms) and through 8 years of age.
Why the study?
Do changes in QRS duration from birth to 10 years differ between patients with single right ventricle versus single left ventricle physiology?
Population
160 patients with single ventricle physiology followed from birth to 10 years.
Comparison
Single right ventricle (sRV) physiology vs Single left ventricle (sLV) physiology
Design
Cohort
Follow-up
10 years
Authors
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Rapid early QRS widening in SV patients (sRV > sLV); leaves open whether minimizing volume load alters trajectory or outcomes.
Cohort (n=160)
Do changes in QRS duration from birth to 10 years differ between patients with single right ventricle versus single left ventricle physiology?
In patients with single ventricle physiology, the greatest increase in QRS duration occurs in the first 6 months of life, with single right ventricles developing significantly longer QRS durations than single left ventricles.
Khan et al. (2015) conducted a cohort in Single ventricle physiology (n=160). Single right ventricle (sRV) vs. Single left ventricle (sLV) was evaluated on QRS duration. Patients with a single right ventricle had significantly longer QRS durations than those with a single left ventricle at 1 year (78.9 vs 73.2 ms) and through 8 years of age.
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