SummaryIntroduction. Pulmonary embolism (PE), being the most severe embolic complication, is characterised by low predictability, high mortality and incapacitation rates as well as a correspondingly high economic cost of therapy and aftercare. In this connection, the main purpose of our work is to find a warning for PE development in non-cardiosurgical patients that have undergone intensive therapy under conditions of general surgical ICU, among the indicators of the haemostasis system.