Q wave myocardial intarction analysed by body surface potential mapping

Body surface potential mops were recorded from 64 electrode positions in 19 normal subjects and 29 patients with either anterior or inferior myocardial infarction (Mi). QRS, ST80, ST-T, Q and QST80 maps were generated for a11 patients and patterns were found corresponding to normal activity, inferior MI and anterior MI. Other variables were extracted related to ST voltage values and presence of pathological Q waves in order to analyse its correspondence with 12-lead electrocardiographic findings ami wirh functional and anatomical measurements derived from magnetic resonance and echocardiography: pegfusion, viabiliry, ejection fraction and thickness. Electrical inforniation WQS found in body sulface potential mapping measurements not detected by 12-lead ECG for Mi patients. Wall thickess, pefusion and viability appeared to be related to Q wave presence and maintained ST elevation.