[Patterns of body surface isointegral maps for anteroseptal and inferior myocardial infarction]

A goal of the present paper was to determine the patterns of the QRS isointegral maps for the two location of myocardial infarction: anteroseptal (aMI) and inferior (iMI), using a method of body surface potential mapping (BSPM) with a 87-electrode Fukuda Denshi system. The maps were recorded in the two groups of the patients with previous (6-12 month earlier), clinically documented, Q-wave myocardial infarction. The examined group comprised 36 patients with aMI and 32 patients with iMI. The analysis concerned the isointegral maps of the assigned seven time intervals within the QRS complex (the A-G maps), rendering the patterns of positive and negative potential distribution, likewise the group-mean values of minima and maxima for each of the analyzed maps. The increased area of negative potential, as compared with the corresponding control maps, was observed in the maps of the A, B and D intervals in the aMI group. Contrary, in the iMI group a pathological negative potential was found only in the E maps (the second half of the QRS complex). The comparative analysis of the potential extremes revealed in the aMI group the significantly more negative minima in the A, B, D and E maps and lower maxima in the A and B maps. However, in the iMI group the only statistically significant difference were the lower minima for the E maps. The investigations resulted in creating the patterns of the pathological distribution of the negative potential and the minimum values in the isointegral QRS maps, which are specific for the anteroseptal and inferior myocardial infarction.