The logical structure of electrocardiographic diagnosis

The description of a mathematical model of structure of electrocardiographic (ECG) diagnosis is given, starting from the automatically measurable characteristics of bioelectrical currents generated in the course of cardiac activity. The "dynamic diagnosis", established for rhythm and for atrioventricular conduction disturbances--by analysis in real time of the periodicity of electrical phenomena--is differentiated from the "static diagnosis", established for the other situations--by the logical intersection of amplitude conditions with duration of the waves belonging to a given ECG lead. Likewise, mathematical rationale separates atrial from infraatrial electrical activity.