Effect of Left Atrium Volume on Patients’ Prognosis Following Acute Myocardial Infarction

Abstract

Evaluating left atrium volume is a good way to estimate prognosis in acute myocardial infarction patients because it indicates to time and severity of diastolic dysfunction and longer-term results of acute myocardial infarction. The present study aims at evaluating the effect of left atrium volume on patients' prognosis following acute myocardial infarction. This is a cohort study conducted on 100 patients who were admitted with acute myocardial infarction. They were studied for 9 months and their one-month mortality rate was evaluated. The patients were studied considering demographic factors, risk factors, mechanical and arrhythmic complications and echocardiography indexes such as systolic and diastolic functions and left atrium volume. It was seen that mortality (27.3%, 6.22) in patients with atrium index > 32 mL m(-2) is more than cases with lower atrium index (1.3%, 1.78) (p = 0.001). There was not any meaningful difference in mortality rate of the patients considering age and gender (p > 0.05). This study indicated to lack of any meaningful difference in patients' mortality rate in terms of hypertension, diabetes, smoking and dyslipidemia. But, mortality rate was significantly higher in MI as a result of elevated-ST, diastolic dysfunction, restrictive pattern, ejection fraction of left atrium < 40%, left atrium volume index > 32 mL m(-2). High volume left atrium independently refers to bad prognosis in patients with acute myocardial infarction which is confirmed with outcome clinical predictors and common echocardiography indexes even following modification.

Prognostic value of left atrial volume index in acute coronary syndrome: A systematic review and meta-analysis

“…Of 3,184 articles identified in the initial searches, 261 studies were considered as potentially relevant. After stringent selection process, 11 articles met the inclusion criteria (Antoni et al, 2011;Badiger, 2019;Beinart et al, 2004;Cho et al, 2012;Cordeiro et al, 2018;Meris et al, 2009;Moller et al, 2003;Nagula et al, 2020;Sakaguchi et al, 2011;Salehi et al, 2013;Secundo Junior et al, 2014): one was secondary analysis of CTs (Antoni et al, 2011), and remaining 10 papers were observational studies. (Figure S1).…”

Relation between left atrial structure and lacunar infarction in patients with hypertension

“…In recent years, the size and function of the left atrium have been clinically valued, and many diseases such as stroke [ 16 ], atrial fibrillation [ 17 ], hypertension [ 18 , 19 ], acute myocardial infarction [ 20 ] and mitral regurgitation [ 21 ] can affect the basic function of LA. The relationship between atrial fibrillation and cerebral infarction is clear.…”