4 3
A P R I L 2 0 1 4 | O U T P AT I E N T S U R G E R Y M A G A Z I N E O N L I N E
Much of the choice in needle selection is up to the clinician. Shorter
bevel needles, which create less risk of neural injury, are most fre-
quently used. Gauge and length of needles are mostly dependent upon
the type of block you're performing and the individual patient.
Insulated needles allow for the use of stimulation at the very distal tip
R E G I O N A L A N E S T H E S I A
INFORMED DECISION
Pros and Cons of Ultrasound Guidance
Pros Cons
Direct visualization of anatomic structure Deep structures difficult to visualize
Decreased procedure time Additional dexterity and visual training required
Increased block success Cost of ultrasound devices
Decreased anesthetic volumes Portability of devices
Decreased vascular punctures Decreased access to devices
Decreased needle passes Dearth of highly trained practitioners
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