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Background: Deranged antepartum laboratory parameters may be risk factors for postpartum hemorrhage (PPH). However, whether this is also valid in women who give birth prematurely is currently unknown. Methods: We performed a retrospective single-center study to assess the role of antepartum hemoglobin, platelet count, fibrinogen, activated partial thromboplastin time, and prothrombin time as risk factors for PPH following caesarean section. We defined PPH as documented blood loss of at least 1 L and/or transfusion of red blood cell concentrates. We stratified the included patients according to gestational age: extremely preterm (gestational age < 28 weeks), very preterm (gestational age between 28 and 32 weeks), late and moderate preterm (gestational age between 32 and 37 weeks), and term (gestational age ≥ 37 weeks). Results: We included 1734 patients, 112 (6%) of whom had PPH. In total, 19 patients (10%) were in the extremely preterm group, 13 patients (10%) were in the very preterm group, 44 patients (9%) were in the late and moderate preterm group, and 36 patients (4%) were in the term group. Hemoglobin predicted PPH in all gestational age groups. Platelet count was associated with PPH in term, but not in preterm patients. Fibrinogen was associated with PPH in late prematurity but not in term patients and not in patients with early or extreme prematurity. Conclusions: Antepartum hemoglobin was the only factor predicting PPH in preterm and term caesarean sections. Platelet count and fibrinogen concentration were associated with PPH in term and late prematurity, respectively, but not in earlier stages of prematurity. [ABSTRACT FROM AUTHOR]

Background: Retained products of conception after childbirth or miscarriage are associated with an increased rate of maternal complications, such as abnormal vaginal bleeding and infections. Late complications may also include intrauterine adhesions, causing infertility. Surgical interventions carry a certain risk. Thus, conservative management is often discussed as an alternative. The aim of this study was to assess the clinical outcomes of patients with retained products of conception, comparing a primary surgical approach to conservative management. Methods: We conducted a retrospective cohort study of 88 patients diagnosed with retained products of conception after 23+0 weeks of gestation at the Medical University Vienna between 2014 and 2022. Results: Forty-seven (53.4%) patients underwent primary surgical management and 41 (46.6%) primary conservative management. After primary conservative treatment, a complication could be observed in 10 (24.4%) women. In contrast, complications occurred in 32 (68.1%) women in the group with primary surgical treatment (p < 0.001). The most common complication in both groups was the ongoing suspicion of retained products of conception. Patients after primary surgical treatment were significantly more likely to require a secondary change in treatment (p < 0.001). Ultimately, secondary conservative management was applied in 30 (63.8%) patients. In contrast, only nine (21.95%) patients with primary conservative management required secondary surgical management. Conclusions: Due to the high risk of complications and persistent retained products of conception, primary surgical management should only be prioritized in hemodynamically instable or septic patients. [ABSTRACT FROM AUTHOR]