Key result
SAECG P wave >140 ms and EF <40% predict ~770% greater AF risk after cardiac surgery.
Why the study?
Atrial fibrillation is a common arrhythmia after cardiac surgery and identifying independent predictors could help in risk stratification.
Do preoperative P wave duration on SAECG and ejection fraction predict the development of atrial fibrillation following cardiac surgery?
Cohort (n=272)
Do preoperative P wave duration on SAECG and ejection fraction predict the development of atrial fibrillation following cardiac surgery?
Odds Ratio: 8.7
Preoperative P wave prolongation >140 ms on SAECG and ejection fraction <40% independently predict a significantly higher risk of developing atrial fibrillation after cardiac surgery.
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P-wave SAECG >140 ms independently predicts post-cardiac surgery AF; hypothesis-generating and requires prospective validation before guiding prophylaxis.
Hutchinson et al. (1996) conducted a cohort in Atrial fibrillation after cardiac surgery (n=272). P wave duration on SAECG >140 ms and EF < 40% vs. Absence of these risk factors was evaluated on Atrial fibrillation following cardiac surgery (OR 8.7). Preoperative P wave duration >140 ms on SAECG combined with an ejection fraction <40% strongly predicted the development of atrial fibrillation following cardiac surgery (OR 8.7).
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