[Extension of necrosis and left ventricular function in recent myocardial infarct. Correlation between a QRS scoring system and various echocardiographic indexes].
The purpose of this study was to evaluate the extension of myocardial necrosis and the impairment of left ventricular function in patients with recent myocardial infarction by means of the standard 12-lead ECG. Then, we tried to correlate the QRS scoring system proposed by Wagner and coll. with some indexes obtained from a M-Mode and Two-Dimensional echocardiographic examination (echo-score, number of compromised areas, E-septum separation and left ventricular ejection fraction) in a group of 105 pts. (mean age 61.54 +/- 9.66 SD years). Patients were divided into three groups: 47 with anterior infarction, 45 with inferior infarction and 13 with anterior and inferior infarction. A statistically significant correlation was found between the QRS scoring system and (a) the infarct size (r between ECG-score and echo-score = 0.40, p less than 0.001; r between ECG-score and compromised areas = 0.47, p less than 0.001) and (b) left ventricular ejection fraction (r = -0.48, p less than 0.001), measured echocardiographically, particularly in pts. with anterior infarction. No correlation was found with the E-septum separation. In conclusion, the correlation between QRS scoring system and echo indexes appeared statistically significant, even if minimally applicable to single cases.
D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D009203:Myocardial Infarction / Q000473:pathology* / Q000503:physiopathology; D013318:Stroke Volume
Estensione della necrosi e funzione ventricolare sinistra nell'infarto miocardico recente. Correlazione fra un sistema di punteggio del QRS e alcuni indici ecocardiografici.