Anesthesia
Conditions
Interventions
Medline Group:The puncture point is located in the midpoint of the L3-4 spinous process space, and the needle is inserted perpendicular to the skin
Paramedian Group:The puncture point is 1.5cm beside the midpoint of the L3-4 spinous process ,and the puncture needle and the skin is at a certain angle
Side - Straight:The puncture point is 0.5cm beside the midpoint of spinous process space,and the puncture needle and the skin is at a certain Angle
Sponsors
The Second Hospital of Lanzhou University
Eligibility
Sex/Gender
All
Age
65 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. American Society of Anesthesiologists (ASA) health status class I-III; 2. Age >= 65 years old; 3. Patients who intend to undergo urological surgery under lumbar anesthesia.
Exclusion criteria
Exclusion criteria: 1. There are contraindications of subarachnoid anesthesia, such as neuropsychiatric system abnormality, puncture site infection or deformity, local anesthetic allergy, and abnormal coagulation function; 2. A history of lumbar trauma or surgery; 3. With scoliosis; 4. Patients refused to participate in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Success rate of first puncture; | — |
Secondary
| Measure | Time frame |
|---|---|
| Number of puncture;The puncture time;Puncture Angle; | — |
Countries
China
Contacts
Public ContactShi Yisa
The Second Hospital of Lanzhou University
Outcome results
None listed