Key result
Left atrial volume ≥ 64 mL/m2 was the only independent predictor of atrial fibrillation recurrence after surgical ablation during valvular surgery (p = 0.03).
Why the study?
Does surgical ablation of atrial fibrillation during valvular heart disease surgery restore left atrial mechanics, and what predicts atrial fibrillation recurrence?
Observational (n=83)
Does surgical ablation of atrial fibrillation during valvular heart disease surgery restore left atrial mechanics, and what predicts atrial fibrillation recurrence?
p-value: p=0.03
Despite the electrical maintenance of sinus rhythm following surgical ablation for atrial fibrillation during valvular surgery, left atrial mechanical function does not recover, and a severely dilated left atrium (≥ 64 mL/m2) predicts recurrence.
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May identify high-risk patients for AF recurrence after surgical ablation; hypothesis-generating, needs prospective validation.
Lorenzo et al. (2018) conducted an observational in Atrial fibrillation in valvular heart disease (n=83). Surgical ablation of atrial fibrillation during valvular heart disease surgery vs. Healthy controls was evaluated on Atrial fibrillation recurrence (p=0.03). Left atrial volume ≥ 64 mL/m2 was the only independent predictor of atrial fibrillation recurrence after surgical ablation during valvular surgery (p = 0.03).
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