Iu R Sheĭkh-zade

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In experiments on cats a single premature beat or vagal stimulation shortened the effective refractory period without any spontaneous heart rate disturbances, while the combined action of these factors always led to paroxysmal tachycardia or atrial fibrillation. It is suggested that contracting myocardium possesses a covert ability for self-excitation(More)
In children of 6-7 years old with infantile cerebral paralysis the heart muscle mobilization is observed that displays in heart rate acceleration, decrease of its variability and some diminuation of adaptive reserves of cardiovascular system. As a result of such adaptation strain the adequate maintenance of the principal hemodynamic parameter (average(More)
A method of controlled atrial fibrillation modelling including the paired stimulation of the right atrium induced by using a transvenous bipolar catheter during vagal arrest of the heart is presented. The myocardial fibrillation is supposed to result from a critical shortening of the absolute refractory period with relation to the hypothetic period of(More)