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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Babol University of Medical Sciences
2004
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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) |
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acute myocardial infarction left ventricular dysfunction left ventricular ejection fraction Medicine R Medicine (General) R5-920 |
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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 |
_version_ |
1718440160352272384 |