This document provides guidance on achieving consistency when performing ultrasound-guided regional anesthesia (UGRA) of the upper limbs. It discusses:
1. Starting simple with techniques and local anesthetics.
2. Staying safe by using slow, incremental injections and monitoring for signs of intravascular injection.
3. Getting proper training, such as using ultrasound simulators before performing blocks on patients.
4. Using adequate volumes of local anesthetic, while recognizing some blocks require higher volumes than others.
5. Carefully assessing block effectiveness and being prepared to perform rescue blocks under ultrasound guidance if the initial block is inadequate.
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Increasing consistency in upper limb UGRA
1. 1
Consistency in UGRA:
Upper Limb Techniques
Colin J.L. McCartney
MBChB PhD FRCA FCARCSI FRCPC
Head of Anaesthesia
The Ottawa Hospital,
Professor and Chair of Anaesthesia
University of Ottawa, ON, Canada
14. Staying safe
1. Know your block
2. Know your ultrasound
3. Slow, incremental injection with frequent
aspiration
4. Use a marker of IV injection
5. Use nerve stimulation and injection pressure
6. Sedate your patients adequately
21. Simulation & Needle guides
20 2nd
year anesthesia residents
No US experience
2 groups: Gp1 Standard training; Gp2 1 hour
training on low fidelity model
Both gps started regional rotation
Success/Failure of blocks assessed
RAPM 2012
22. Simulation & Needle guides
Success: Block performed within 15 minutes
and suitable for surgery without rescue blocks
23. Simulation & Needle guides
Conventional group 98 successful blocks, and
the simulation group had 144 (51.3% vs 64%;
P = 0.016).
CUSUM: Conventional group 40% achieved
proficiency, Simulation group, 80% proficiency
(P = 0.0849)
24. Summary: Consistency in UGRA
1. Start simple
2. Stay safe
3. Get trained
4. Use volume (if needed)
5. Assess carefully and rescue if needed
25. 4. Use volume
In the hands of experts very low volumes of
local anesthetic can be used for successful
BPB
For some techniques (axillary, interscalene)
Not for others (infraclavicular, supraclavicular)
The proper dose of any drug is enough
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29. RDBCT 40 patients USG ISB
Posterior approach
5 vs 20 ml 0.5% ropivacaine
Standard GA
Primary endpoint: Phrenic block at 30 min
Secondary: Postop pain, Oxygen
saturation, spirometry BJA 2008
30. Can a low volume US-guided technique
reduce common complications of ISB?
Riazi S, Carmichael NM et al BJA 2008
20ml
20ml
5ml
5ml
%=oxygen saturation on air in PACU
31. Can a low volume US-guided technique
reduce common complications of ISB?
Riazi S, Carmichael NM et al BJA 2008
38. Use a block room if possible
Reduces anesthesia controlled time
Allows time to perform blocks and allow onset
before moving patient to OR
Benefits for patient
Allows teaching and research
Costs: extra staff, space, equipment
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39. Assess carefully
Even experts have slow/failed blocks
Push, pull, pinch, pinch
Use rescue blocks if needed
Dont be frightened of the dreaded swear
words: Propofol and LMA
Follow up with your patient
Take responsibility for any adverse events
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