In the second day of the patient's stay at the ICU,spontaneous abortion took place, accompanied with heavy bleeding from the genital tract ,which aggravated the previously observed anaemia, with Hgb falling to 77 g and Hct to 0.229 L/L, and required transfusion of 3u of packed red blood cells. Following gynaecological consulta- tion, dilation and curettage was performed, and oxytocin and methergine were administered, which stopped the bleeding from the genital tract. Despite combined empirical antibiotic therapy, neither decrease in inflammation markers nor improvement in the general condition of the patient was achieved: she still had high fever up to 40 ̊C. After extended-spectrum beta-lactamase –positive (ESBL+) Escherichia coli was grown in blood and urine culture, the antibiotic therapy was modified into directed therapy, in accordance with the antibiogram re- sults: peracillin + tazobactam and amikacin were discontinued, while cylastatyna + imipenem 0.5 G, four times daily, and Clindamycin 0.3 G three times daily, were introduced, obtaining a decrease in laboratory markers of the infection, the fever dropping to 38 ̊C. Follow-up ultrasonography of the abdomen did not show a dilatation of the pyelocalyceal system of the kidneys and the position of the JJ stent was correct. On the 5th day at the ICU the patient was extubed and the infusion of catecholamines was discontinued. Within the following days of hos- pitalisation her cardiovascular and respiratory conditions were stable. On the 7th day she was transferred to the Urology Clinic for further treatment. Within the following days of hospitalisation further decrease in laboratory markers of the infection was observed and the general condition of the patient improved. Six weeks later, JJ stent was removed and the patient was recommended for periodic urological examination. Laboratory data are shown in Table 1.