maternal
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: All of the participants were primigravida. American Society of Anesthesiologists (ASA) physical status I or II, single gestation, undergoing elective cesarean section, were included in this study.
Exclusion criteria
Exclusion criteria: With history of hypersensitivity to the drugs used, contraindications for regional block(such as infection of the puncture site, anatomic deformities, or coagulation disorders), diagnosis of acute or chronic fetal distress, prior administration of opioids and other central nervous system depressants, Rhesus immunization, and body mass index (BMI) > 40.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Maternal hemodynamic parameters;initial onset of cryanaesthesia;the quality of anesthesia;Apgar scores; | — |
Countries
China