Evaluation of a QRS scoring system for estimating myocardial infarct size

摘要: Abstract This study correlated the location and size of posterolateral myocardial infarcts (Mls) measured anatomically with that estimated by quantitative criteria derived from standard 12-lead ECG. Twenty patients were studied who had autopsy-proved, single, Mls no confounding factors ventricular hypertrophy or bundle branch block in their Left anatomic Ml ranged 1 to 46%. No patient a ≥ 0.04-second Q wave any electrocardiographic lead only 55% 0.03-second wave. A 29-point, simplified QRS scoring system consisting 37 weighted was applied Points scored ECG 85% (range 8 points). indicated wide variety criteria; 19 different leads met. The correlation coefficient between MI score 0.72. Each point represented approximately 4% left wall.