Sixty-eight patients with different disorders of the cardiac rhythm were examined in ambulatory conditions. The complex of noninvasive examinations included: echocardiography, Holter monitoring, bicycle ergometry [correction of veloergometry] and transesophageal cardiostimulation with performance of diagnostic and pharmacological tests. The obtained data permitted to evaluate disorders of automatism and conduction at different levels of the cardiac conduction system, to identify paroxysmal tachyarrhythmia and realize selection of antiarrhythmic agents.
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