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심근경색증에서 합병증에 따른 각종 지수의 변동에 대한 연구
박재찬,이영,권오선,권인순,김자천,강태영 대한내과학회 1986 대한내과학회지 Vol.30 No.6
This study was done to observe the changes of various indices in patients with heart failure in myocardial infarction. The present indices were obtained as follow; QRS scoring system. by means of 12 lead standard electrocardiogram, PEP/LVET ratio and QT-QS₂, value by means of carotid pulse tracing and phonocardiogram and wall motion index by means of 2-D echocardiogram. The studied subject were consisted of 30 patients with acute myocardial infarction. The mean age of the patients was 56 years(range 36 to 79). The results were as follow; 1) The QRS scoring system, PEP/LVET ratio and wall motion index were significantly higher in patients with heart failure than in uncomplicated patients. 2) QT-QS₂ values were prolonged in patients with heart failure but it didn't reach statistical significance. 3) 3Vhen we compare the sensitivity, specificity and predictive value of each index in the presence of heart failure, the QRS scoring system(85%) showed the highest specificity and then comes wall motion index(76%) and PEP/LVET ratio in that order; The QRS scoring system(85%) showed the highest sensitivity and then comes PEP/LVET ratio(70%) and wall motion index in that order. 4) The QRS scoring system(79%) showed the highest positive predictive value and then comes wall motion index(64%) and PEP/LVET ratio in that order. These data suggest that QRS scoring system, PEP/LVET ratio and wall motion indices may be useful in predicting the presense of heart failure in patients with acute myocardial infarction. In this study, the single most valuable discriminator of the presence of heart failure was QRS scoring system.