Key result
Higher preoperative left atrial reservoir strain is linked to lower risk of post-CABG atrial fibrillation.
Why the study?
Whether preoperative left atrial reservoir strain (LASr) is associated with postoperative atrial fibrillation (POAF) in patients undergoing coronary artery bypass grafting (CABG) needed to be determined.
Does preoperative left atrial reservoir strain assessed by two-dimensional speckle-tracking echocardiography predict postoperative atrial fibrillation in adult patients undergoing elective isolated coronary artery bypass grafting?
Cohort (n=80)
No
Does preoperative left atrial reservoir strain assessed by two-dimensional speckle-tracking echocardiography predict postoperative atrial fibrillation in adult patients undergoing elective isolated coronary artery bypass grafting?
Preoperative left atrial reservoir strain assessed by speckle-tracking echocardiography independently predicts postoperative atrial fibrillation following isolated CABG, offering incremental risk stratification beyond conventional clinical and echocardiographic parameters.
Answers are grounded in this paper and cite their sources.
May support left atrial strain for POAF risk stratification after CABG; leaves open need for validation in larger prospective cohorts.
Objectives: To determine whether preoperative left atrial reservoir strain (LASr) was associated with postoperative atrial fibrillation (POAF) in patients undergoing coronary artery bypass grafting (CABG). Study Design and Setting: Prospective observational study conducted at Punjab Institute of Cardiology over six months, from December 2025 to May 2026. Methodology: Eighty adult patients undergoing elective isolated CABG were enrolled. Preoperative clinical assessment, electrocardiography, and conventional echocardiography were performed. Left atrial reservoir strain was assessed using two-dimensional speckle-tracking echocardiography. Patients were continuously monitored postoperatively for new-onset AF. Perioperative beta-blocker and amiodarone use was documented. Patients were categorized into POAF and non-POAF groups. Statistical analysis was performed using SPSS version 27. Logistic regression was used to identify independent predictors of POAF. Results: POAF occurred in 25 (31.3%) patients. Patients who developed POAF had significantly lower preoperative LASr than those without POAF (21.8±4.7% vs. 28.9±5.3%; p<0.001). Left atrial volume index was also higher in the POAF group (33.2±6.7 vs. 28.0±6.1 mL/m²; p=0.002). On multivariable analysis, lower LASr independently predicted POAF (OR=0.82, 95% CI: 0.73–0.92; p=0.001), along with age and left atrial volume index. Conclusions: Reduced preoperative LASr was independently associated with POAF following CABG. Preoperative left atrial strain assessment may provide additional risk stratification for patients undergoing CABG.
No takes yet. Share an insight, caveat, or question.
Raziq et al. (2026) conducted a cohort in Patients undergoing elective isolated coronary artery bypass grafting (CABG) (n=80). Preoperative left atrial reservoir strain (LASr / PALS) assessed by two-dimensional speckle-tracking echocardiography vs. Patients who remained in sinus rhythm (non-POAF group) vs POAF group; multivariable model evaluated per 1% increase in LASr was evaluated on New-onset postoperative atrial fibrillation (POAF, defined as a new episode of AF lasting ≥5 minutes or requiring pharmacological or electrical intervention) (OR 0.82, 95% CI 0.73–0.92, p=0.001). Preoperative left atrial reservoir strain independently predicted postoperative atrial fibrillation after CABG (adjusted OR 0.82 per 1% increase, 95% CI 0.73–0.92; p=0.001).
Synapse has enriched 10 related papers. Consider them for comparative context: