Key result
Preoperative negative V1 P-wave deflection predicts early and late arrhythmias after the Fontan operation.
Why the study?
Postoperative arrhythmias after the Fontan operation are frequent and cause significant morbidity, but predictors of immediate and late arrhythmias are not well defined.
Population
30 patients who underwent Fontan operation between 1977 and 1986
Comparison
Patients with and without immediate and late postoperative arrhythmias
Design
Retrospective cohort study
Follow-up
6.3 ± 2.6 years (mean) with up to 10.7 years maximum
Authors
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May inform Fontan arrhythmia risk stratification; hypothesis-generating and requires prospective validation before practice change.
Cohort (n=30)
p-value: p=0.02 for immediate, 0.005 for late
Weber et al. (1989) conducted a cohort in Post-Fontan operation (n=30). Preoperative electrocardiographic atrial abnormalities (negative P-wave deflection) vs. Patients without significant preoperative atrial abnormalities was evaluated on Immediate (≤ 30 days) and late postoperative arrhythmias (p=0.02 for immediate, 0.005 for late). Preoperative atrial abnormalities (more negative P-wave deflection in lead V1) predicted immediate (P=0.02) and late (P=0.005) postoperative arrhythmias after the Fontan operation.
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