Functional states of various heart segments during protracted hypokinesis in patients with tuberculosis of bones and joints.

By the method of acceleration cinecardiography the effect of hypokinesis on the contracting activity of the left and right heart was studied in 46 patients with tuberculous affections of bones and joints, confined to strict bed rest. As controls here served 40 patients with unrestricted mobility and 33 healthy subjects. It was found that the restriction of mobility and compulsory horizontal body positions of the patients contributed to a rearrangement of the phasic structure of the cardiac cycle. During the initial phase of immobilization the unusual conditions of circulation and the specific intoxication enhanced the cardiac contracting activity. From the third month of bed rest onwards, myocardial hypofunction set on in both ventricles and the left atrium. Accelerated heart rate during the hypokinetic period attested to a low efficacy of cardiac work. Disturbances of heart dynamics did not cease even three month of bed rest onwards, myocardial hypofunction set on in both ventricles and the completely controlled.