[Exercise tolerance in evaluating the efficacy of continuous electrocardiostimulation in patients with atrioventricular block].

Fifty-three patients with brady-cardia were examined prior to and 1 year after the implantation of the cardiostimulator. It was found that the bicycle ergometric test was not contraindicated in examining the function of the respiration and circulation in patients with stable forms of bradyarrhythmia. Three types of the body's response to exercise were identified.

[Late results of the surgical treatment of a postinfarct interventricular septal defect].

Surgical treatment of patients with post-infarction defect of the interventricular septum is highly effective. Despite the complexity and large volume of operation in this contingent of patients results of the operation are much better than in patients treated conservatively. At late periods after operation fairly high physical activity of patients is observed, which permits return to work to some of them, and to patients of pension age, enables them to do house chores, while the survived nonoperated patients are hardly capable of self-help.