FIELD: medicine. SUBSTANCE: method involves performing clinical examination of a patient, ultrasonic examination (USE) of extracerebral arteries (ECA) and main arteries of the head (MAH). Risk factors (RF) are detected by means of electrocardiogram, their analysis and USE values analysis is carried out. The numeric values and grades are determined to calculate prognosis coefficients F1 and F2 from formula: F1=-36.8 + 11.49a1 + 8.42a2 + 2.72a3 + 3.03a4 + 17.84a5 - 0.94a6 + 3.45a7 + 16.6a8 + 4.93a9 - 2.87a10 - 6.58a11 + 3.03a12 + 2.98a13 - 3.88a14 + 2.98a15 - 3.39a16 - 3.63a17 + 7.25a18 - 1.34a19 +1.94a20 +7.13a21 + 5.11a22. F2=-46.32 + 14.45a1 + 7.18a2 + 4.39a3 + 6.07a4 + 19.36a5 - 1.9a6 + 2.05a7 + 15.76a8 + 5.09a9 + 0.17a10 - 5.57a11/ + 1.41a12 + 2.95a13 - 1.03a14 + 3.63a15 - 2.7a16 + 0.51a17 + 5.96a18 - 0.78a19 + 2.25a20 + 6.07a21 + 4.53a22, respectively, where a1 - a22 are grades and numeric values of RF, Doppler USE and MAH values, clinic surgical examination data (a1 is the age, a2 is the excessive body weight, a3 is the psychoemotional stress, a4 is the hypokinesia, a5 is the smoking, a6 is the alcohol abuse, a7 is the hereditary properties aggravated with cardiovascular diseases, a8 is the diabetes mellitus, a9 is the arterial hypertension, a10 is the myocardial ischemia disease, a11 is the cerebrocranial trauma available in anamnesis, a12 is the chronic otorhinolaryngologic pathology, a13 is the occluding stenosing injuries of MAH, a14 is the hemodynamically significant stenoses of MAH, a15 is the inconsistency of arterial circle of Willis, a16 is the occluding stenosing injuries, a17 is the Still syndrome, a18 is the lower extremity arteries injury level, a19 is the critical lower extremity ischemia, a20 is the lower extremity arteries atherosclerosis obliterans disease duration, a21 is the cervical osteochondrosis, a22 is the repair operations on lower extremities. The prediction coefficients F2 ≥ F1, dyscirculation encephalopathy is to be predicted in male patients suffering from lower extremity arteries atherosclerosis obliterans and showing no clinical manifestations of cerebral vascular pathology. EFFECT: high accuracy of prognosis. 1 tbl
