Ultrasound Obstet Gynecol
October 2023
Objective: Monochorionic (MC) triplet pregnancies are extremely rare and information on these pregnancies and their complications is limited. We aimed to investigate the risk of early and late pregnancy complications, perinatal outcome and the timing and methods of fetal intervention in these pregnancies.
Methods: This was a multicenter retrospective cohort study of MC triamniotic (TA) triplet pregnancies managed in 21 participating centers around the world from 2007 onwards.
Objective: To evaluate the performance of third-trimester ultrasound for the diagnosis of clinically significant placenta accreta spectrum disorder (PAS) in women with low-lying placenta or placenta previa.
Methods: This was a prospective multicenter study of pregnant women aged ≥ 18 years who were diagnosed with low-lying placenta (< 20 mm from the internal cervical os) or placenta previa (covering the internal cervical os) on ultrasound at ≥ 26 + 0 weeks' gestation, between October 2014 and January 2019. Ultrasound suspicion of PAS was raised in the presence of at least one of these signs on grayscale ultrasound: (1) obliteration of the hypoechogenic space between the uterus and the placenta; (2) interruption of the hyperechogenic interface between the uterine serosa and the bladder wall; (3) abnormal placental lacunae.
Cervical implantation could develop in three different ways. The gestational sac can grow up to external os and interruption may simulate an abnormal menstruation. Theoretically the gestational sac could reach the uterine cavity, with a normal evolution of the pregnancy, even if the implantation of the placenta would be on internal uterine os.
View Article and Find Full Text PDFThe syndrome from circulatory maternal, precocious and belated deficit could influence the appearance of a vast range of obstetric incluted pathology: recurrent abortions, delays of increase, pre-eclampsia, fetal and neonatal dead. The principal biochemical implicated mechanism has represented from alteration of equilibrium trombossano prostaciclina with adjunct vasoconstriction and uterum-placental hypoperfusion. In this study the authors have estimated the efficacy and the compliance of the heparan sulfate in 30 pregnant patients to risk for vascular pathology.
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