The Analysis Of Pregnancy Outcome For Complicated Monochorionic Twin By Prenatal Ultrasound

Objective:to explore pregnancy outcome for complicated monochorionic twin by prenatal ultrasound.Methods:During Jan 2014 to Oct 2016,239 cases of monochorionic twin diagnosed by early trimester were enrolled,normalized ultrasound examination was executed from 16 week,fetus growth,umbilical cord blood flow,middle cerebral artery blood flow,amniotic fluid and placenta were monitored.For complicated and non-complicated MC,pregnancy outcome was followed up and compared.Results:Except 7 cases without followed-up,42 cases of complicated MC and 190 cases of non-complicated MC were diagnosed,loss rate and premature birth rate for complicated MC were 23.8%(10/42),88,1%(37/42),for non-complicated MC were 4.7%(9/190),43.2%(82/190)separately.They were increased significantly compared with complicated MC and non-complicated MC(p<0.05).Meanwhile,live birth rate for complicated MC and non-complicated MC were 76.2%(32/42)and 95.3%(181/190),it was decreased significantly(p<0.05)with comparison,8 cases were twin-to-twin transfusion syndrome(TTTS),1 case for TTTS ?,7 cases for TTTS ?-?.32 cases were selective fetal growth restriction(sFGR),1 case for sFGR ?,7 cases for sFGR ?-?.2 cases were twin reverse arterial perfusion sequence(TRAP).4 cases were twin anemia polycythemia sequence(TAPS).2 cases of TAPS were combined with sFGR,2 cases of sFGR progressed to TTTS.The live birth rate and loss rate for TTTS ? and sFGR ? had no significant difference(p>0.05)compared with TTTS ?-? and sFGR ?-?.Conclusion:Complicated MC is a high-risk pregnancy,live birth rate is significantly decreased with non-complicated MC,Prenatal ultrasonography can evaluate and monitor the complications of complicated MC.