Left ventricular systolic dysfunction among nocturnal myocardial infarctions

Background and Objective: Diurnal variation in the onset of acute myocardial infarction with a peak in the morning has been demonstrated. Few data are available concerning about the left ventricular systolic dysfunction according to the infarct time. Regarding importance of onset of heart failure fo...

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Autores principales: A Ghaemian, N Naderi, AF Zand Parsa
Formato: article
Lenguaje:EN
FA
Publicado: Babol University of Medical Sciences 2004
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Acceso en línea:https://doaj.org/article/0298859ca08549b7ad4a7b6dd87135de
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spelling oai:doaj.org-article:0298859ca08549b7ad4a7b6dd87135de2021-11-10T09:16:19ZLeft ventricular systolic dysfunction among nocturnal myocardial infarctions1561-41072251-7170https://doaj.org/article/0298859ca08549b7ad4a7b6dd87135de2004-10-01T00:00:00Zhttp://jbums.org/article-1-2667-en.htmlhttps://doaj.org/toc/1561-4107https://doaj.org/toc/2251-7170Background and Objective: Diurnal variation in the onset of acute myocardial infarction with a peak in the morning has been demonstrated. Few data are available concerning about the left ventricular systolic dysfunction according to the infarct time. Regarding importance of onset of heart failure following acute myocardial infarction, this study was done to survey the effect of the time of acute myocardial infarction on left ventricular systolic dysfunction. Methods: This prospective study was performed on 100 patients with acute myocardial infarction (AMI). Left ventricular systolic dysfunction (LVSD) was defined by echocardiography when ejection fraction (EF) was less than 55%. Findings: Of these patients, 72 had EF<55% and 37% of them experienced myocardial infarction between 6 am and 5:59 pm (Group 1) and 63 experienced their AMI between 6 pm and 5:59 am (Group 2). Left ventricular EF less than 55% occurred in 22 (59.5%) patients of group 1 compared with 50 (79.4%) in group 2 (P=0.04). Mild, moderate and severe LVSD were also more frequent in group 2 patients (P=0.01). Conclusion: The risk of mild, moderate and severe left ventricular systolic dysfunction after AMI is higher among infarctions that begin at night.A GhaemianN NaderiAF Zand ParsaBabol University of Medical Sciencesarticleacute myocardial infarctionleft ventricular dysfunctionleft ventricular ejection fractionMedicineRMedicine (General)R5-920ENFAMajallah-i Dānishgāh-i ̒Ulūm-i Pizishkī-i Bābul, Vol 6, Iss 4, Pp 34-38 (2004)
institution DOAJ
collection DOAJ
language EN
FA
topic acute myocardial infarction
left ventricular dysfunction
left ventricular ejection fraction
Medicine
R
Medicine (General)
R5-920
spellingShingle acute myocardial infarction
left ventricular dysfunction
left ventricular ejection fraction
Medicine
R
Medicine (General)
R5-920
A Ghaemian
N Naderi
AF Zand Parsa
Left ventricular systolic dysfunction among nocturnal myocardial infarctions
description Background and Objective: Diurnal variation in the onset of acute myocardial infarction with a peak in the morning has been demonstrated. Few data are available concerning about the left ventricular systolic dysfunction according to the infarct time. Regarding importance of onset of heart failure following acute myocardial infarction, this study was done to survey the effect of the time of acute myocardial infarction on left ventricular systolic dysfunction. Methods: This prospective study was performed on 100 patients with acute myocardial infarction (AMI). Left ventricular systolic dysfunction (LVSD) was defined by echocardiography when ejection fraction (EF) was less than 55%. Findings: Of these patients, 72 had EF<55% and 37% of them experienced myocardial infarction between 6 am and 5:59 pm (Group 1) and 63 experienced their AMI between 6 pm and 5:59 am (Group 2). Left ventricular EF less than 55% occurred in 22 (59.5%) patients of group 1 compared with 50 (79.4%) in group 2 (P=0.04). Mild, moderate and severe LVSD were also more frequent in group 2 patients (P=0.01). Conclusion: The risk of mild, moderate and severe left ventricular systolic dysfunction after AMI is higher among infarctions that begin at night.
format article
author A Ghaemian
N Naderi
AF Zand Parsa
author_facet A Ghaemian
N Naderi
AF Zand Parsa
author_sort A Ghaemian
title Left ventricular systolic dysfunction among nocturnal myocardial infarctions
title_short Left ventricular systolic dysfunction among nocturnal myocardial infarctions
title_full Left ventricular systolic dysfunction among nocturnal myocardial infarctions
title_fullStr Left ventricular systolic dysfunction among nocturnal myocardial infarctions
title_full_unstemmed Left ventricular systolic dysfunction among nocturnal myocardial infarctions
title_sort left ventricular systolic dysfunction among nocturnal myocardial infarctions
publisher Babol University of Medical Sciences
publishDate 2004
url https://doaj.org/article/0298859ca08549b7ad4a7b6dd87135de
work_keys_str_mv AT aghaemian leftventricularsystolicdysfunctionamongnocturnalmyocardialinfarctions
AT nnaderi leftventricularsystolicdysfunctionamongnocturnalmyocardialinfarctions
AT afzandparsa leftventricularsystolicdysfunctionamongnocturnalmyocardialinfarctions
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