Methodology of ECG interpretation in the Lyon program.
To provide an in-depth interpretation of the spatial QRS-T contour, we established a set of vectorcardiographic parameters computed octant by octant. For each statement the criteria constitute a model which is closely related to pathophysiological patterns. The diagnostic strategy is of the heuristic type. For each diagnosis a table lists several criteria providing both specific and differential diagnostic information. Inter-table competition is handled by specific logic. The program classifies diagnoses according to the number of non-satisfied criteria. Three versions are available including 124, 51 and 7 diagnoses, respectively. The first, intended for interpretation of complex situations, has given satisfactory results in such situations. Rhythm analysis is performed from 8-second recordings. All functions--acquisition, quality control, choice of a dominant complex, wave recognition, parameter extraction, interpretation, editing, storage--are integrated into a mobile cart. A complementary program performs serial analysis of successive tracings. It highlights with great precision morphological changes in the spatial loops and interval variations.
Arnaud
P
P
Institut National de la Santé et de la Recherche Médicale--U. 121, Hôpital Cardiologique, Lyon, France.
Rubel
P
P
Morlet
D
D
Fayn
J
J
Forlini
M C
MC
D003936:Diagnosis, Computer-Assisted; D004562:Electrocardiography; D005602:France; D012815:Signal Processing, Computer-Assisted; D012984:Software