Key result
Preoperative left ventricular global longitudinal strain (OR 0.643) and left atrial strain (OR 1.111) significantly predicted the occurrence of postoperative atrial fibrillation in patients undergoing coronary artery bypass grafting.
Why the study?
To identify the clinical and echocardiographic parameters that predict AF in CAD patients after CABG.
Do preoperative clinical and echocardiographic parameters predict post-operative atrial fibrillation in CAD patients undergoing CABG?
Observational (n=100)
No
Do preoperative clinical and echocardiographic parameters predict post-operative atrial fibrillation in CAD patients undergoing CABG?
Odds Ratio: 0.643 (95% CI 0.488–0.846)
p-value: p=<0.001
Preoperative left atrial and left ventricular global longitudinal strain can identify patients at high risk for post-operative atrial fibrillation after CABG.
Echocardiographic LA/LV parameters may aid POAF risk stratification post-CABG; hypothesis-generating and requires prospective validation.
OBJECTIVES: To detect the clinical and echocardiographic parameters that predict AF in coronary artery disease (CAD) patients after coronary artery bypass surgery (CABG). METHODS: One hundred CAD patients scheduled for CABG were included. Standard 2D, PW Doppler and 2D speckle tracking echocardiography were performed to assess left atrial (LA) and ventricular (LV) function and their role in predicting post-operative atrial fibrillation (POAF). RESULTS: Twenty-two percent of patients developed POAF. POAF patients were significantly older (P= 0.001) with increased heart rate (P= 0.001). POAF patients had increased LA diameters and volumes (P < 0.001). Left ventricular ejection fraction (LVEF) was significantly lower in POAF patients (P < 0.004). POAF patients had significantly lower LA and LV global longitudinal strain (LVGLS) (p < 0.001). Clinical predictors of POAF were age and heart rate (P < 0.001). While, echocardiographic measures associated with POAF were LA and LV global longitudinal strain (P <0.001). LA longitudinal strain ≤ 23.1 (85% sensitivity and 66% specificity ) and LVGLS ≤ -14.4 (70% sensitivity and 85% specificity) predicted POAF. CONCLUSIONS: Preoperative LA and LV global longitudinal strain predicts POAF in CABG patients. Echocardiographic deformation measures can enhance clinical profile to identify patients at high risk for POAF.
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A 2020 study conducted an observational in Coronary Artery Disease (CAD) (n=100). Left ventricular global longitudinal strain (LVGLS) and Left atrial (LA) strain vs. Normal strain parameters was evaluated on Occurrence of post-operative atrial fibrillation (POAF) (OR 0.643, 95% CI 0.488-0.846, p=<0.001). Preoperative left ventricular global longitudinal strain (OR 0.643) and left atrial strain (OR 1.111) significantly predicted the occurrence of postoperative atrial fibrillation in patients undergoing coronary artery bypass grafting.
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