Labor analgesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: (1) American Society of Anesthesiologists (ASA) classification of I.~II.; (2) Maternal age< 40 years old; (3) Vaginal testing and B-ultrasound extrapelvic measurement before labor, which meet the conditions for natural vaginal delivery; (4) No contraindications to neuraxial anesthesia; (5) singleton full-term cephalic pregnancy; (6) no history of opioid abuse; (7) Pregnant women and their families agreed to participate in this study and signed an informed consent form.
Exclusion criteria
Exclusion criteria: (1) Allergy to the drugs used in this study; (2) Combined with gestational hypertension, placental abruption and other diseases; (3) Combined with diseases of important organs, affecting production or anesthesia; (4) Fetal heart rate monitoring indicates fetal intrauterine distress; (5) Prenatal fever (body temperature greater than 37.3°C) ;(6) Mental illness and inability to cooperate with medical care.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| VAS score drop value; | — |
Secondary
| Measure | Time frame |
|---|---|
| 10min VAS score after the first pulse dose;VAS score 30min after the first pulse dose;VAS score 60min after the first pulse dose;Full-time VAS score of Miyaguchi opening;VAS score at 60 min after delivery; | — |
Countries
China
Contacts
Chengdu Pidu District People's Hospital