Ultrasound Image Study for Ultrasound-assisted Paramedian Spinal Anesthesia: Difference in Sidedness of Approach, Position and Age
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Anesthesia, Spinal
- Sponsor
- Seoul National University Hospital
- Enrollment
- 40
- Locations
- 1
- Primary Endpoint
- Ultrasonic visualization grading at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
This prospective observational study aimed to obtain ultrasound images for ultrasound-assisted paramedian spinal anesthesia and identify the differences according to sidedness of approach, position and age.
Investigators
Jin-Tae Kim
Professor
Seoul National University Hospital
Eligibility Criteria
Inclusion Criteria
- •Patients under 40 or over 60 years of age who require spinal anesthesia for orthopedic surgery,
- •with ASA physical status classification system I, II, III
Exclusion Criteria
- •Patients with contraindication to spinal anesthesia (coagulopathy, local infection, allergy to local anesthetic)
- •Patients with communication difficulties
- •Patient who can not take a sitting or lateral decubitus position (fracture)
- •Patients with a history of spinal surgery
- •Patient with anatomical abnormality of the spine
Outcomes
Primary Outcomes
Ultrasonic visualization grading at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
Time Frame: Preanesthesia
* Good: Both LFD (ligamentum flavum-dura mater complex) and PLL (posterior longitudinal ligament) are visible * Intermediate: Only one of LFD or PLL is visible * Poor: LFD and PLL are not visible
Distance between the midline and the expected location of needle insertion
Time Frame: Preanesthesia
Distance between the midline of the vertebrae and the expected location of needle insertion at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
Height of LFD through interlaminar space
Time Frame: Preanesthesia
Height of LFD through interlaminar space visible in ultrasound image at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
Depth from skin to LFD
Time Frame: Preanesthesia
The depth from skin to LFD at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
Depth from skin to PLL
Time Frame: Preanesthesia
The depth from skin to PLL at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position
Width of the intrathecal space
Time Frame: Preanesthesia
The distance between the LFD and the PLL at left L3-4, L4-5, L5-S1 interspace and right L3-4, L4-5, L5-S1 interspace in lateral decubitus position and sitting position