caesarean section
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Age 20 to 35 years old, single pregnancy, pregnancy or 37 weeks, ASA I, or II level, combined spinal epidurai anesthesia
Exclusion criteria
Exclusion criteria: 1. Hypertensive disease during pregnancy; 2. Cardiovascular and cerebrovascular diseases; 3. Mental illness; 4. Contraindications of spinal anesthesia; 5. Fetal distress or immediate cesarean section; 6. Pregnant women with BMI28; 7. Severe visual, hearing, intellectual or language barriers; 8. Inability to communicate or reluctance to participate in research.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| inferior vena cava collapsibility; | — |
Countries
China