Labor analgesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. ASA class I-II objects; 2. Primipara with single head position natural delivery; 3. Subjects with gestational age >=37 weeks; 4. Subjects aged 20-40 years; 5. The subjects whose cervix dilation is less than 3 cm when there is analgesic demand; 6. Visual analogue scale (VAS) of pain >= 40 mm (0 for no pain, 100 mm for severe pain).
Exclusion criteria
Exclusion criteria: 1. Contraindications of epidural anesthesia; 2. Subjects who received opioid or sedative treatment before epidural placement; 3. The subject of drug abuse history; 4. Subjects with a history of cardiopulmonary disease or liver and kidney dysfunction; 5. Subjects with a history of nervous and psychiatric diseases; 6. Subjects allergic to the study drug; 7. Pregnant women with abnormal fetal heart rate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| VAS; | — |
Secondary
| Measure | Time frame |
|---|---|
| side effects;labor time; | — |
Countries
China
Contacts
Tianjin Central Hospital of Gynecology and Obstetrics