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[Relationship between myocardial perfusion state immediately after reperfusion therapy and left ventricular wall motion improvement in patients with acute myocardial infarction].

Abstract：

:The relationship between myocardial contrast echocardiography and improvement of the left ventricular wall motion was studied as an indicator of the prognosis of patients with acute myocardial infarction. Ten patients with acute anterior myocardial infarction who demonstrated successful reperfusion (improved to TIMI grade III) and patency of the responsible coronary artery during the chronic stage (one month after the onset) were selected. The contrast study used 2 ml of sonicated iopamidol injected into the left coronary artery. Two-dimensional echocardiograms were taken at the level of papillary muscle on the short axis for recording in VTR. The results of the contrast study were evaluated using a contrast defect score based on the degree and width of the contrast defect. Percent wall motion improvement was measured as an index of improvement of the left ventricular wall motion and CKmax was used for estimating the extent of myocardial necrosis. There was a good correlation between contrast defect score and CKmax (r = 0.853) or % wall motion improvement (r = 0.77). No correlation was found between coronary occlusion time and CKmax nor between coronary occlusion time and % wall motion improvement. The results suggest that if the score is high, recovery of left ventricular wall motion cannot be expected in patients with acute myocardial infarction who demonstrate successful reperfusion. In such cases, myocardial perfusion has not been effectively restored and myocardial necrosis extended over a wide area. If the score is low, recovery of the wall motion can be expected in the chronic stage even though abnormal left ventricular wall motion area is extensive immediately after reperfusion therapy.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Cardiol

journal_title

Journal of cardiology

authors

Nishizaki S,Ohke M,Masaoka Y,Mohri S,Mikouchi H,Nishizaki Y

subject

Has Abstract

pub_date

1995-03-01 00:00:00

pages

105-12

issue

3

eissn

0914-5087

issn

1876-4738

journal_volume

25

pub_type

杂志文章

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