[Physical exercise tolerance in heart surgery patients during decompensated metabolic acidosis]. / Perenosimost' fizicheskoi nagruzki v usloviiakh dekompensirovannogo metabolicheskogo atsidoza kardiokhirurgicheskimi bol'nymi.

Spiroergometric findings obtained before and in different periods (1 month to 8 years) after surgical correction were analyzed in 373 patients with congenital and acquired heart diseases. This allowed the patients to be divided into two groups in terms of their exercise tolerance in decompensated metabolic acidosis. The division should be used to assess the function of the oxygen transport system in cardiac surgical patients who have failed to achieve the "plateau" of oxygen uptake.

[Use of anaerobic threshold for determining the level of exercise capacity in rehabilitation of patients operated on for heart defects]. / Ispol'zovanie anaérobnogo poroga dlia naznacheniia treniruiushchego urovnia nagruzki pri reabilitatsii bol'nykh, operirovannykh po povodu porokov serdtsa.

An analysis of results of spiroergometry and radionuclide ventriculography in the mixed group of cardiosurgical patients allowed to reveal a reliable accretion of fraction of expulsion of the left ventricle during transition from the state of rest to work at the level of anaerobic threshold and absence of accretion of this index in further increase of exercise. The results obtained allowed to propose the use of anaerobic threshold equal to 60% of the threshold uptake of oxygen as an indicator in choosing the optimum intensity of the training exercise of patients operated on for heart diseases.

[Reoperations in bradyarrhythmic forms of disorders of heart conductivity]. / Povtornye operatsii pri bradiaritmicheskikh formakh narushenii provodimosti serdtsa.

Under analysis were causes of reoperations in bradyarrhythmic forms of disturbances of conductivity of the heart. 565 operations connected with electrocardiostimulation were performed on 276 patients. Reoperations in patients with the myocardial stimulation were made on 63 patients, with the endocardial stimulation--in 226 patients. Causes of reoperations were as follows: depletion of the source of ECS--31.5%; dislocation of the electrode--8.2%; damage of the electrode--15%, suppuration of the bed, decubitus of the stimulator--28.8%; competing rate--7.4%; break of the contact in the connecting system of the electrode and cardiostimulator--9.4%.

[Maximal oxygen consumption as the basis for functional classification of patients subjected to surgery for a mitral defect]. / Maksimal'noe potreblenie kisloroda kak osnova funktsional'noi klassifikatsii bol'nykh, operirovannykh po povodu mitral'nogo poroka.

A functional classification of the physical condition of patients operated on for heart diseases is proposed on the basis of exercise testing results. It is based on the assessment of maximum individual capacity to increase oxygen consumption over the resting level. The identification of 4 functional classes is supported by hemodynamic, ventilation and pulmonary gas exchange data obtained at the peak of exercise. The proposed classification meets the requirements of an objective and quantitative assessment of the patients' functional capacity as may be needed in the assessment of the efficiency of cardiosurgical correction of the defect, the rationing of therapeutic and domestic activity, working capacity prognosis and occupational recommendations.