Prediction of preserved flow to the infarct area based on admission electrocardiogram in anterior wall acute myocardial infarction
| Autor: | Yasuhiko Tanabe, Taku Matsubara, Akira Shibata, Masaru Yamazoe, Hideaki Otsuka, Yutaka Igarashi, Akio Matsuoka, Isao Sakashita, Hidenori Kato, Masashi Takahashi, Masaaki Okabe, Yusuke Tamura, Senji Hayashi, Shigetaka Kasuya |
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| Rok vydání: | 1990 |
| Předmět: |
Adult
Male medicine.medical_specialty Myocardial Infarction Coronary Angiography Coronary circulation QRS complex Electrocardiography Internal medicine Coronary Circulation medicine Humans Myocardial infarction Aged medicine.diagnostic_test business.industry ST elevation fungi Sigma Middle Aged medicine.disease Myocardial Contraction Stenosis medicine.anatomical_structure Cardiology bacteria Female Cardiology and Cardiovascular Medicine business Artery |
| Zdroj: | The American journal of cardiology. 65(22) |
| ISSN: | 0002-9149 |
| Popis: | To determine whether preserved flow to the infarct area could be predicted from the admission electrocardiogram and to define the effect of preserved flow on the late results after reperfusion, 20 anterior myocardial infarction patients who were successfully reperfused were studied. Patients were divided into 3 groups: (1) no-flow group (8 patients), with an occluded infarct-related artery and no easily visible collaterals; (2) intact collateral group (6 patients); and (3) subtotal obstruction group (6 patients). From the admission electrocardiogram, the sum of ST-segment elevation (sigma ST), the sum of R-wave amplitude (sigma R) in leads V1 through V6 and the ratio of these (sigma R/sigma ST) were measured. There was no significant difference in sigma R among the 3 groups. The no-flow group had significantly lower sigma R/sigma ST and higher sigma ST than the intact collateral group or subtotal obstruction group. All patients (6 of 6) with subtotal obstruction and all except 1 patient (5 of 6) with intact collateral showed sigma R/sigma ST greater than 2.5 or sigma ST less than 2.0 mV. All patients (8 of 8) with no flow showed sigma R/sigma ST less than or equal to 2.5 and all except 1 patient with no flow (7 of 8) showed sigma ST greater than or equal to 2.0 mV. The regional wall motion was assessed by the radial method at 4 weeks. The mean percentage systolic shortening in the anterior and apical regions was significantly correlated with sigma R/sigma ST (r = 0.75, p less than 0.001) and sigma ST (r = -0.65, p less than 0.005).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Databáze: | OpenAIRE |
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