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Objective: To examine whether the early diagnosis of uterine incarceration before 20 weeks of gestation improves maternal-perinatal prognoses., Methods: A systematic review of all of the cases published in the past 30 years that met the inclusion and exclusion criteria was performed and reported in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses recommendations. A comparative analysis of diagnoses before and after 20 weeks of gestation was performed., Results: Eighty-nine studies with a total of 146 cases of uterine incarceration during pregnancy were included. For cases of incarceration diagnosed before 20 weeks of gestation, a higher proportion of clinical symptoms was observed; however, a lower proportion of complications, such as premature delivery, need for cesarean section, and poor perinatal outcomes, were observed (P < 0.05). The proportion of spontaneous resolution and minimally invasive techniques for the treatment of incarceration was significantly higher among patients diagnosed with this pathology before 20 weeks (P < 0.05)., Conclusion: The literature indicates that uterine incarceration is a rare complication during pregnancy with better maternal-perinatal results if diagnosed earlier than 20 weeks., (© 2022 International Federation of Gynecology and Obstetrics.)

Triplet pregnancies are rare events that affect approximately 93 in 100,000 deliveries in the world, especially due to the increased use of assisted reproductive techniques and older maternal age. Triplet pregnancies are associated with a higher risk of fetal and maternal morbidity and mortality compared to twins and singletons. Chorionicity has been proposed as a major determinant of perinatal and maternal outcomes in triplet pregnancies, although further evidence is needed to clarify the extent and real influence of this factor. Thus, the aim of this study was to conduct a systematic review of the literature and a meta-analysis of the maternal and perinatal outcomes of triplet pregnancies, evaluating how chorionicity may influence these results. A total of 46 studies with 43,653 triplet pregnancies and 128,145 live births were included. Among the main results of our study, we found a broad spectrum of fetal and maternal complications, especially in the group of monochorionic and dichorionic pregnancies. Risk of admission to NICU, respiratory distress, sepsis, necrotizing enterocolitis, perinatal and intrauterine mortality were all found to be higher in non-TCTA pregnancies than in TCTA pregnancies. To date, our meta-analysis includes the largest population sample and number of studies conducted in this field, evaluating a wide variety of outcome measures. The heterogeneity and retrospective design of the studies included in our research represent the main limitations of this review. More evidence is needed to fully assess outcome measures that could not be studied in this review due to scarcity of publications or insufficient sample size. [ABSTRACT FROM AUTHOR]