Older pregnancy
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: According to the results of NT ultrasound in pregnancy, single pregnant women who have given birth at the age of 35 should check the accurate expected delivery date
Exclusion criteria
Exclusion criteria: Multiple pregnancies, artificial insemination, diabetes, chronic hypertension, other endocrine diseases, connective tissue diseases, chronic liver diseases and other diseases, as well as long-term use of steroids.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pregnancy outcome; | — |
Countries
China
Contacts
Southern Medical University Zhujiang Hospital