postoperative analgesia
Conditions
Interventions
150ug morphine: intrathecal injection of 150ug morphine
200ug morphine: intrathecal injection of 200ug morphine
250ug morphine:intrathecal injection of 250ug morphine
Sponsors
The General Hospital of the PLA Northern Command
Eligibility
Sex/Gender
Female
Age
20 Years to 35 Years
Inclusion criteria
Inclusion criteria: 1. Patients undergoing elective cesarean section in the General Hospital of the Northern Theater of Operations; 2. voluntarily participate and sign the informed consent form; 3. >= 37 weeks of gestation, age 20~35 years old, ASA grade II., height 150~170cm, body mass index BMI<35kg/m^2; 4. No contraindication to neuraxial anesthesia, subarachnoid block anesthesia and successful block (plane T6 or above).
Exclusion criteria
Exclusion criteria: 1. Have a mental illness that prevents normal communication, refuses to participate in the trial, or is unable to give informed consent; 2. Severe cardio-cerebral and pulmonary diseases, including unstable angina, myocardial infarction, ventricular dysfunction, and increased intracranial pressure; 3. severe pregnancy-induced hypertension; 4. gastrointestinal diseases, including gastrointestinal obstruction; 5. hepatic insufficiency; 6. History of motion sickness and obvious nausea and vomiting during pregnancy; 7. Recent use of opioid analgesics and sedative drugs or preoperative use of antipruritus drugs; 8. Allergies to related drugs; 9. Subarachnoid block anesthesia failure or poor anesthetic effect.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| effective analgesia time; | — |
Secondary
| Measure | Time frame |
|---|---|
| severity and duration of itching;severity of nausea and vomiting; | — |
Countries
China
Contacts
Public ContactCao Huijuan
The General Hospital of the PLA Northern Command
Outcome results
None listed