The aim of the research. To identify prognostic factors for the development of sepsis in postpartum women who have suffered critical obstetric conditions (CAC). Materials and methods. We retrospectively examined 39 postpartum women after CAC, who were divided into groups: A – main group, with advanced sepsis (n = 18), B – control group without sepsis (n = 21). An analysis of clinical data upon admission was carried out. The results were processed using Statistica 12.0, Microsoft Excel and in the R environment. Results. Statistically significantly more often, patients in the main group gave birth before the 34th week of pregnancy, p = 0.04. About 50% of the subjects gave birth in first-level maternity facility. Preeclampsia and obstetric hemorrhage were the main causes of CAC development. Hemorrhagic shock occurred in 84,6% of subjects. All women underwent total hysterectomy. Sepsis developed on day 9 (4; 9) after delivery. It was shown that the chance of developing obstetric sepsis is 28 times more often in the case of artifical ventilation and at AVPU, 10 times – in case of adult respiratory distress syndrom, 7 times – in case of developed kidney failure, 6 times – in case of cerebral edema. When assessing the condition of postpartum women using the integral scales APACHE II, APACHE III, SOFA, NEWS2, a statistically significant OR in the development of sepsis remains only for the NEWS2 index; with a score of 4 points, the resulting model predicts the development of sepsis. The risk of developing obstetric sepsis is associated with MNO ≥ 1,13, CVP ≥ 6 and ASAT ≥ 45; in the presence of at least one of these factors, it increases by 7-8 times in terms of odds ratio (OR). Conclusion. The risk of developing obstetric sepsis in critical obstetric conditions is associated with the presence of mechanical ventilation and AVPU, adult RDS, renal failure, cerebral edema, a NEWS2 score of 4 or more points, MNO ≥ 1,13, CVP ≥ 6 and ASAT ≥ 45. The effectiveness of the developed prognostic model is: sensitivity – 94,5%, specificity – 90,5%.