Monoamniotic multiple pregnancies

Zeitschrift für Geburtshilfe und Neonatologie
B Arabin

Abstract

Monochorionic monoamniotic (MCMA) multiple pregnancies are rare events with an incidence of around 0.004% of all life births. They are the result of a delayed splitting of a single blastocyst whereby the stimuli and mechanisms are still unknown. The Incidence of MCMA multiple pregnancies is increased after artificial reproductive techniques. With the advent of modern ultrasonography the diagnosis of MCMA multiple pregnancies and the combined complications such as cord entanglement, malformations including the incidence if conjoined twins and even threatening preterm delivery or twin-twin transfusion syndrome has improved. The chances of intact survival of up to 80-90% have improved through intensified surveillance. It is recommended to perform a Cesarean section at around 32 gestational weeks. Postnatal investigations of the placenta and its anastomoses have increased our understanding of the pathophysiology of MCMA multiple pregnancies.

Citations

Feb 11, 2012·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·U ZollnerJ Dietl
Apr 22, 2021·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·M SilvaA Matias

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