obstetrics
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Aged 25 to 35 years, 50-100 kg weight, ASA I or II, 36 weeks gestation or greater, first-timer, single pregnancy, head, expand the opening of the cervix 2 ~ 3 cm
Exclusion criteria
Exclusion criteria: Prenatal use of analgesics (tramadol, demerol), sedative hypnotic history; history of neuropsychiatric disorders; high-risk pregnancy (placental abruption, placenta previa); dural rupture; epidural catheter bleeding into the blood resulted in interruption of analgesia
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Ropivacaine dose;Nerve injury factors; | — |
Countries
China
Contacts
International Peace Maternal and Child Health Hospital, Shanghai Jiao Tong University School of Medicine