[Disorders of the heart rhythm in the immediate postoperative period in patients who have undergone vascular surgery].

Heart rate changes during the immediate postoperative period were studied in 190 patients that underwent revascularization surgery. At the same time, other cardiovascular complications in those patients were analyzed. In 89 patients (46.8%), cardiovascular antecedents were found. Ischemic heart disease was found in 84 patients (44.2%). The most common cardiac arrhythmia was found to be sinus tachycardia, which was seen in 87 patients (45.7%). Following in order of frequency were supraventricular extrasystoles together with ventricular extrasystoles in 18 patients (9.4%) and isolated ventricular extrasystoles in 16 (8.4%). The most common cardiovascular and hemodynamic complications, both associated and as predisposing causes, were high blood pressure in isolation or combined with heart failure found in 58 (30.5%) and 8 (4.3%) patients, respectively. Hypokalemia played an important role since it was found in 105 patients (55.3%), 90 of whom had cardiac arrhythmia (85.7%). Seven revascularized patients (3.7%) died due to cardiovascular causes.