Hypotension after spinal anesthesia
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. ASA I-II; 2. Aged 18 to 40 years; 3. Height 150 cm to 180 cm; 4. Body mass index (BMI) is less than 35 kg/m2; 5. Single child, full term; 6. Elective cesarean section.
Exclusion criteria
Exclusion criteria: 1. Combined with cardiovascular and cerebrovascular, respiratory, blood, endocrine, liver and kidney diseases; 2. Maternal complications such as placental abruption, placenta previa, pregnancy-induced hypertension, eclampsia and gestational diabetes; 3. Intraspinal blockade contraindication.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Umbilical artery blood PH;blood pressure, heart rate; | — |
Secondary
| Measure | Time frame |
|---|---|
| the doses and times of the remedy use of methoxamine, ephedrine, and atropine;PaO2,PaCO2,BE,Lactate and HCO3- of neonatal umbilical artery and umbilical vein blood and Apgar score of the newborn;the frequency of maternal nausea, vomiting, hypotension, hypertension and bradycardia.; | — |
Countries
China