Internal environment of the fetus
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Pregnant women aged between 18 and 40 years old; 2.ASA classification I-II; 3. Single term pregnancy; 4. Undergo spinal anesthesia to perform cesarean section, and collection of umbilical cord blood during the perioperative period; 5.Agree to participate in the study
Exclusion criteria
Exclusion criteria: 1. Unable or refusing to sign the informed consent form; 2. Those who are allergic to norepinephrine or phenylephrine or are not suitable for use; 3. Those with known abnormal fetal development; 4. Those who are accompanied by severe heart, brain, liver, and kidney diseases; 5. Those who are currently using monoamine oxidase inhibitors or tricyclic antidepressants; 6. Those who have contraindications to spinal anesthesia; 7. Those who are unable to communicate and cooperate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Base excess; | — |
Secondary
| Measure | Time frame |
|---|---|
| Potential hydrogen (pH);Partial pressure of oxygen (PO2);Partial pressure of carbon dioxide (PCO2);Bicarbonate (HCO3-);Blood glucose;Incidence of fetal acidosis; | — |
Countries
China
Contacts
The Second People's Hospital of Hefei