Spinal Anesthesia
Conditions
Interventions
B4 group:12.5mg Bupivacaine + 50µg Fentanyl
B5 group:15.0mg Bupivacaine + 50µg Fentanyl
B6 group:17.5mg Bupivacaine + 50µg Fentanyl
B1 group:5.0mg Bupivacaine + 50µg Fentanyl
B2 group:7.5mg Bupivacaine + 50µg Fentanyl
B3 group:10.0mg Bupivacaine + 50µg Fentanyl
B7 group:20.0mg Bupivacaine + 50µg Fentanyl
Sponsors
Ningxia Hui Autonomous Region People's Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 60 Years
Inclusion criteria
Inclusion criteria: (1) Age between 18 and 60 years old, with a Body Mass Index (BMI) ranging from 20 to 35 kg/m²; (2) Patients classified as American Society of Anesthesiologists (ASA) physical status I-II; (3) No contraindications for subarachnoid block or the use of anesthetic drugs; (4) Consent to participate in the study and having signed a written informed consent form.
Exclusion criteria
Exclusion criteria: (1) Patients with severe neurological or neuromuscular diseases who are unable to complete the assessment; (2) Patients with infections at the injection site; (3) Patients who are pregnant or breastfeeding; (4) Patients with severe concomitant cardiac, pulmonary, renal, or hepatic diseases.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Onset time of sensory block;Duration of sensory block;Efficacy of sensory block at the time of skin incision;Motor block status;Duration of motor block; | — |
Secondary
| Measure | Time frame |
|---|---|
| Vital signs;Incidence of adverse reactions;Postoperative neurological complications; | — |
Countries
China
Contacts
Public ContactQingshan Ye;Ruoxi Rao
Ningxia Hui Autonomous Region People's Hospital
Outcome results
None listed