PMID: 15240958Jul 9, 2004Paper

The relationship between terminal QRS complex distortion and early low dose dobutamine stress echocardiography in acute anterior myocardial infarction

Japanese Heart Journal
Mehmet Murat SucuNizamettin Toprak

Abstract

Although the damage in myocardial infarction has been demonstrated to be related with the magnitude and number of ST elevation, its relation with terminal distortion of QRS is unclear. The relationship between terminal QRS distortion in ECGs on admission and the results of early low dose dobutamine stress echocardiography (LDSE) performed 6 +/- 2 days later was investigated. Patients admitted to our clinic within the first six hours of their chest pain and without a prior infarction diagnosis were divided into two groups based on the admission electrocardiogram as the absence (QRS-, n = 33) or presence (QRS+, n = 29) of distortion of the terminal portion of the QRS in > or = 2 leads (QRS+; J point at > 50% of the R wave amplitude in lateral leads or presence of ST elevation without S wave in leads V1-V3). There were no significant differences between the groups with respect to thrombolytic therapy or reperfusion criteria. During LDSE, the infarct zone wall motion score index (WMSI) in the QRS- group was significantly decreased relative to baseline (from 2.93 +/- 0.65 to 2.37 +/- 0.84, P = 0.02), and it was significantly different compared with WMSI in the QRS+ group (P = 0.005). Improvement of akinetic regions to hypokinetic re...Continue Reading

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Citations

Oct 6, 2011·Australasian Physical & Engineering Sciences in Medicine·Jinzhong SongRuiyun Zhu
Mar 10, 2015·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Burak AyçaBarıs Okcun
Mar 19, 2014·Journal of Electrocardiology·Gilad D BirnbaumYochai Birnbaum

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