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Anaesthesiology
Neuraxial Regional Anesthesia Ultrasound Guidance for Spinal and Epidural Blocks
Built from Practical Ultrasound in Anesthesia
What’s inside
8 sections · 50 slides
Overview
- Overview
Introduction
What neuraxial blockade is, and the two ways ultrasound can help
- Neuraxial blockade
- When landmarks are unreliable
- Two ways ultrasound assists
- Preprocedural versus real-time
Anatomy of the lumbar spine
The bones, spaces, and the sonographic landmarks
- Parts of a lumbar vertebra
- Lumbar vertebra: anatomical parts
- Bony windows for the ultrasound beam
- Interlaminar and interspinous spaces (posterior view)
- Adjacent lumbar vertebrae (lateral view)
- Sonographic landmarks in the canal
Sonographic views
Three parasagittal and two transverse windows
- Setting up to scan
- 2–5 MHz
- The five sonographic views
- Parasagittal scanning planes (positions A, B, C)
- Transverse scanning planes (positions A and B)
- Probe position for the parasagittal view
- Parasagittal transverse process view
- Parasagittal articular process view
- Parasagittal articular process view
- Parasagittal oblique interlaminar view
- Parasagittal oblique interlaminar view
- Transverse spinous process view
- Transverse spinous process view
- Transverse interspinous view
- Transverse interspinous view
Preprocedural scanning
A consistent step-by-step method, its benefits, and its limits
- A consistent step-by-step approach
- Marking the skin
- The needle entry point
- Advantages of preprocedural scanning
- Choosing the approach
- Limitations of preprocedural scanning
- Challenging situations
Thoracic spine
How mid-thoracic vertebrae differ, and how to count levels
- Thoracic spine scanning
- Thoracic vertebra with probe positions
- Thoracic parasagittal oblique view
- Thoracic transverse view
- Using the 12th rib to count
Real-time guidance and innovations
Live needle tracking, 3D/4D imaging, and AI
- Why real-time guidance
- Challenges of real-time guidance
- Innovations: 3D and 4D imaging
- Innovations: AI and machine learning
Takeaways
What the evidence shows, and why routine scanning matters
- Clinical benefits
- Safety benefits
- “
- Landmark versus ultrasound
- References
- References (continued)
- References (continued)
- Practical Ultrasound in Anesthesia for Critical Care and Pain Management