Labor Analgesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. 37~42 weeks gestation, singleton, nulliparous pregnant women; 2. Age 20-35 years old; 3. American Society of Anesthesiologists (ASA) grade I~II. 4. Cervical dilation 2-3cm; 5. Patients should have a detailed understanding of the nature, significance, possible benefits, possible inconveniences and potential dangers of the trial before the trial, understand the study procedures, and voluntarily sign the informed consent form in writing.
Exclusion criteria
Exclusion criteria: 1.Age under 20 or over 35, multiparous, geriatric pregnancy, multiple gestation; 2. Morbid obesity, pregnancy-related conditions (i.e., gestational diabetes, pregnancy-induced hypertension, and preeclampsia); 3. History of substance abuse, contraindications for neuraxial block; 4. Hypersensitivity to study medications; 5. Conditions increasing the risk of cesarean section (i.e., placenta previa, history of uterine abnormalities or surgical interventions), and known fetal anomalies.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Time to reach adequate analgesia; | — |
Secondary
| Measure | Time frame |
|---|---|
| Motor block;Sensory block;Maternal and infant outcomes;Adverse reactions; | — |
Countries
China
Contacts
Women and Children's Hospital, Qingdao University