• Kai Wang, Deli Zeng, Zijun Chen, and Wei Yu.
• From the Department of Cardiology (Wang, Zeng, Chen), Yongchuan Hospital of Chongqing Medical University; and form the Department of Cardiology (Chen, Yu), The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
• Saudi Med J. 2023 Dec 1; 44 (12): 126012681260-1268.

ObjectivesTo evaluating the predictive significance of the left atrial diameter in acute ST elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI).MethodsThe STEMI population came from 2 retrospective cohorts with 1097 patients, cohorts A (YongChuan Hospital) and cohorts B (Taizhou First People's Hospital). Within 3 days (cohort A) or 5 days (cohort B) post-PCI, patients underwent ultrasound evaluations. Cohort A was segmented into quartile categories based on eft atrial diameter (LAd) (Q1 to Q4). The odds ratios (ORs) for overall mortality were assessed using logistic regression. Cohort B was used for sensitivity analysis.ResultsDuring follow-up period, 226 (20.6%) patients experienced endpoint. In cohort A, univariable odds ratios were 2.68 (95%CI 1.11~6.89), 5.32 (95%CI 2.46~12.83) and 11.92 (95%CI 5.78~27.92), while multivariate ORs were 2.25 (95%CI 0.82~6.55), 5.09 (95%CI 2.12~13.56), and 15.05 (95%CI 6.58~39.09) in Q2 to Q4 group, respectively, compared with Q1 group (p for trend <0.001). Upon subgroup evaluation, the correlation between LAd and the likelihood of overall mortality was more pronounced in patients having a left ventricular ejection fraction (LVEF) between 40% and 50%, and those with LVEF ≥50%, in contrast to those with LVEF <40% (p for interaction <0.001).ConclusionLeft atrial diameter is indicative of the long-term overall mortality risk in STEMI patients post-PCI, particularly in those with an LVEF ≥ 40%.Copyright: © Saudi Medical Journal.

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