[The computerized display of epicardial mapping (author's transl)].

UNLABELLED

The epicardial mapping is necessary for the surgical treatment of drug-resistant cardiac arrhythmia. The procedure for the epicardial mapping consists of three stages: 1) recording of heart potentials, 2) extraction of excitation transmission time, and 3) display of epicardial mapping. In this paper, our new microcomputer-based system was discussed. It was achieved by this system to simplify the method for the extraction and to make the colorgraphic display of epicardial mapping. Two methods for extraction were used in this study to compare with manual operation: 1) D method; extracting the time, when the differentiated wave takes maximal potential, and 2) Wi method; extracting the time of (Formula: see text).

RESULTS

1. similar epicardial excitation maps were obtained by these computerized methods, and 2) the most approximate values of the transmission time was obtained by Wi (i=2) method.