Gangrene of lower extremities in 59 (52.7%) prevailed among purulent complications. After the development of sepsis we detected in all patients significantly increased heart rate, respiratory rate per minute, leukocytosis, anemia, worse glucose metabolism and renal function (Table 1). Congestive heart failure became more severe. This was confirmed by decrease of left ventricle ejection fraction (55.2 ± 5.1% before sepsis vs. 49.3 ± 4.1% after) and increase brain natriuretic peptide (291.4 ± 34.5 ng/ml vs. 395.2 ± 28.1 ng/ml, P < 0.001). Prior sepsis in 66 (58.9%) of patients with arterial hypertension was observed, after in 88 (78.6%). After admission to the centre, patients had no signs of septic shock. In 13 (11.6%) patients, the perioperative period was complicated by acute myocardial infarction, which was accompanied by a fall in blood pressure. We detected an increase of the functional class of stable angina, congestive heart failure, 4.2 times increased incidence of unstable angina, 2.6 times ventricular and four times supraventricular extra systole after septic complications (Table 2).