Key result
Higher left atrial kinetic energy predicts ~73% lower POAF risk after cardiac surgery.
Why the study?
Postoperative atrial fibrillation is a common complication following cardiac surgery that increases morbidity and healthcare costs, necessitating echocardiographic predictors to improve risk stratification.
Do echocardiographic parameters of atrial mechanics predict postoperative atrial fibrillation in patients undergoing cardiac surgery?
Observational (n=131)
Do echocardiographic parameters of atrial mechanics predict postoperative atrial fibrillation in patients undergoing cardiac surgery?
Effect estimate: OR 0.27
p-value: p=<0.001
Echocardiographic assessment of atrial mechanics, combined with clinical factors, provides excellent discriminatory ability for predicting postoperative atrial fibrillation after cardiac surgery.
LAKE may refine POAF risk models in cardiac surgery; leaves open prospective validation before clinical adoption.
Postoperative atrial fibrillation (POAF) is a common complication after cardiac surgery, increasing morbidity and healthcare costs. This study aimed to identify echocardiographic predictors of POAF to improve risk stratification. A total of 131 patients undergoing cardiac surgery were analyzed and divided into two groups based on POAF occurrence. Echocardiographic analysis showed that patients with POAF had larger left and right atrial dimensions and impaired atrial function. Prolonged total atrial conduction time (TACT), reduced atrial emptying volumes, and contractile function were more common in the POAF group. Univariable analysis identified LAEF (χ2 = 71.8, p < 0.001), LAKE (χ2 = 70.1, p < 0.001), RATEF (χ2 = 65.7, p < 0.001), and RAAEF (χ2 = 66.8, p < 0.001) as significant predictors of POAF, each with an area under the curve (AUC) greater than 0.89. In multivariable analysis, LAKE (OR = 0.27, p < 0.001), hypertension (OR = 11.87, p = 0.035), left ventricular ejection fraction (OR = 1.08, p = 0.020), and peripheral vascular disease (OR = 40.28, p = 0.002) were independent predictors. The final model showed a significant discriminatory ability (AUC = 0.94). LAKE and clinical factors remained independent predictors after adjustment.
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Perić et al. (2025) conducted an observational in Postoperative atrial fibrillation after cardiac surgery (n=131). Echocardiographic assessment (LAKE, LAEF, RATEF, RAAEF) was evaluated on Postoperative atrial fibrillation (POAF) (OR 0.27, p=<0.001). Left atrial kinetic energy (LAKE) independently predicted postoperative atrial fibrillation after cardiac surgery (OR 0.27, p<0.001), contributing to a highly discriminatory risk model (AUC 0.94).
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