An emergency team has delivered to a hospital an unconscious patient found lying in the street in winter. Objectively: the patient is pale, with superficial respiration; bradycardia with heartrate 54/min, to- 35,0°C. AP- 100/60 mm Hg. Palpation of chest and abdomen revealed no peritoneal symptoms. There is a smell of alcohol from the patient's mouth. What is the most likely diagnosis?