Lower extremity orthopedic surgery patients
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. The patient or family member signs the informed consent form. 2. Elective lower limb orthopedic surgery is planned to be performed under subarachnoid anesthesia. 3. 18=age=90 years old. 4. No gender restrictions. 5. American Society of Anesthesiologists classifies ASA I~III.
Exclusion criteria
Exclusion criteria: 1. Contraindications of subarachnoid anesthesia. 2. Severe cardiopulmonary disease. 3. History of lumbar surgery. 4. Scoliosis. 5. Pregnant and lactating women. 6. Patients with affected skin in the anesthetized area.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Number of needle passes; | — |
Secondary
| Measure | Time frame |
|---|---|
| Number of attempts;Successful dural puncture at the first pass;Successful dural puncture within 2 passes;Successful dural puncture at the first attempt;Successful dural puncture within 2 attempts;Ultrasonic identification time;The puncture time;Ultrasonic identification time and the puncture time; | — |
Countries
China
Contacts
Hebei Cangzhou Hospital of Integrated Traditional Chinese Medicine and Western Medicine