Regional anesthesia and pain medicine
The most recent articles from:
Reg Anesth Pain Med
-
Reg Anesth Pain Med · May 2008
Intensity of the stimulating current may not be a reliable indicator of intraneural needle placement.
The current intensity at which a motor response is elicited with an intraneural needle placement has been inadequately studied. We hypothesized that electrical current delivered through an intraneurally placed needle does not always result in an evoked motor response. Our secondary objective was to determine the relationship between electrical current intensity and needle-to-nerve distance. ⋯ Specific response to nerve stimulation with currents <0.2 mA occurred only when the needle tip was positioned intraneurally. However, motor response could be absent with intraneural needle placement at a current intensity of up to 1.7 mA.