The extent of the non-contracting segment significantly correlated with left ventricular ejection fraction in 21 patients with akinesis and/or dyskinesis after acute myocardial infarction.
Observational (n=34)
In order to investigate the relation between infarct size in acute myocardial infarction and left ventricular ejection fraction early after recovery, total creatine kinase released was calculated by the modified method of Sobel et al. (1972) from the serial determinations of serum CK activity; left ventri- culography and selective coronary arteriography were performed at a mean of 2 months after the onset of infarction in 34 patients with acute myocardial infarction. Of 34 patients, 32 (94%) had left ventricular asynergy. In 21 patients with akinesis and/or dyskinesis, a significant correlation was found between the extent of thenon-contractingsegmentof theleft ventricle and left ventricular ejection fraction, indicating that the extent of the non-contracting segment contributes largely to reduction of ejection fraction in patients with myocardial infarction.
Hori et al. (Sun,) conducted a observational in acute myocardial infarction (n=34). Infarct size estimated from total CK released was evaluated on Correlation between infarct size (extent of non-contracting segment) and left ventricular ejection fraction. The extent of the non-contracting segment significantly correlated with left ventricular ejection fraction in 21 patients with akinesis and/or dyskinesis after acute myocardial infarction.
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