FIELD: medicine. SUBSTANCE: method involves recording electrocardiogram and sphygmogram. Automatic sphygmogram differentiation is carried out. The sphygmogram is gated with respect to electrocardiogram so that positive velocity is recorded on the gated segment. Deficient cardiac contractions are determined by counting the number of gated segments having zero and negative velocities. EFFECT: enhanced accuracy in recording cardiac rhythm disorders.
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