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Associations between ECG changes and echocardiographic findings in patients with acute non-ST elevation myocardial infarction

Authors :
Suvi Sirkku Tuohinen
Pirkko-Liisa Kellokumpu-Lehtinen
Vesa Virtanen
Kjell Nikus
Tanja Skyttä
Heini Huhtala
Pekka Raatikainen
Jani Rankinen
Clinicum
Department of Medicine
University of Helsinki
Kardiologian yksikkö
HUS Heart and Lung Center
Source :
Journal of electrocardiology. 51(2)
Publication Year :
2017

Abstract

Background: ST segment depression (STD) and T wave inversion (TWI) are typical electrocardiographic (ECG) findings in non-ST elevation myocardial infarction (NSTEMI). In ST elevation myocardial infarction, ST changes represent transmural ischemia. The pathophysiological mechanisms of the ECG changes in NSTEMI are unclear. Purpose: We studied the associations between ECG and the echocardiographic findings in NSTEMI patients. Methods: Twenty patients with acute NSTEMI were recruited during their hospital stay. A comprehensive echocardiography study was performed. The findings were compared with blinded ECG analyses. Results: Nine (45%) patients had STD, and 16 (85%) patients had TWI. In multivariable analysis, STD was independently associated with a lower global early diastolic strain rate (beta=-5.061, p=0.033). TWI was independently associated with lower circumferential strain (beta=0.132, p =0.032). Conclusions: The typical ECG changes in NSTEMI patients were associated with subtle echocardiographic changes. STD was related to changes in diastolic function, and TWI was associated with systolic deterioration. (C) 2017 Elsevier Inc. All rights reserved.

Details

ISSN :
15328430
Volume :
51
Issue :
2
Database :
OpenAIRE
Journal :
Journal of electrocardiology
Accession number :
edsair.doi.dedup.....4dd47154ef0d4d5bed527036e0840bdf