[Bioelectric myocardial activity in orthopedic surgery with autohemotransfusion]

20 patients who have undergone difficult operations on locomotor apparatus with autohemotransfusion were examined. Twenty-four-hour ECG-monitoring before and after operation was used for registration of bioelectric myocardial activity. Tachycardia, in night time chiefly, disorders of circadian cardiac rhythm, ischemic depression of ST-segment without clinical symptoms were revealed in all the patients in postoperative period. These disorders are maximal in older age group that must be taken into account during planning surgery and hemotransfusion.