twin pregnancies
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: monochorionic diamniotic pregnancies with regular menstruation before pregnancy and the last menstruation is known; Healthy pregnant women, no obvious abnormalities in pre-pregnancy examination and no genetic diseases; The number of weeks of pregnancy was determined by the date of the last menstrual period and the first ultrasound measurement in the first trimester.
Exclusion criteria
Exclusion criteria: monoamniotic pregnancies, triplets and cases with congenital anomalies or twin reversed arterial perfusion sequence (TRAPS)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| fetal cardiac function; | — |
Secondary
| Measure | Time frame |
|---|---|
| ultrasound placental texture;fetal Doppler parameters; | — |
Countries
China
Contacts
Shengjing Hospital of China Medical