left atrial geometry and pump function in ischemic cardiomyopathy

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ID: 162337
2014
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Ranked #4 of 29 articles by views in international microbiology : the official journal of the spanish society for microbiology

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Abstract
Background: Many of the factors that are known to alter left atrial (LA) contractility are present in patients with ischemic cardiomyopathy (ICM). Nevertheless, preservation of LA contractile function in this group of patients was reported in previous studies. The aim of this study was to assess the changes in LA size, geometry and contractile function in ICM. Methods and results: 60 subjects (age: 49 ± 12 years, 53% males) in sinus rhythm undergoing coronary angiography (CA), were enrolled in this study; 15 subjects as a control group, 30 patients with reduced ejection fraction (EF) and significant coronary artery disease; as the ICM group, and 15 with reduced EF and normal CA; as the dilated cardiomyopathy (DCM) group. LA dimensions, volume, active emptying fraction (ACTEF) and eccentricity index (LAEi) as well as late diastolic velocities of the mitral annulus (a′) and LA free wall (A3) were measured. Compared with the control group, ICM patients had larger LA volume and reduced ACTEF, a′ and A3, with no significant difference between patients with ICM and DCM in any of these parameters. LA eccentricity was, non-significantly, higher in both cardiomyopathy groups than in the control group. Conclusions: Patients with ICM have increased LA volume and reduced LA contractile function in comparison with normal controls. LA enlargement, LA contractile dysfunction and LA geometric changes in ICM are similar to that occurring in DCM. LA size, contractile function and eccentricity may not be reliable in differentiating ischemic from idiopathic dilated cardiomyopathy.
Reference Key
abdelzaher2014internationalleft Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Mohammad Abdelghani Abdelzaher;Wael Mohammad Atteia
Journal international microbiology : the official journal of the spanish society for microbiology
Year 2014
DOI
10.1016/j.ijcha.2014.10.009
URL
http://www.sciencedirect.com/science/article/pii/S2352906714000761
Keywords
heart failure echocardiography left atrial function

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