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6 Cards in this Set

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what kinds of sensations are generally conducted by large, myelinated nerve fibers?
non-noxious sensations (e.g., light touch, pressure, proprioception, temperature)
what kinds of sensations are generally conducted by smaller, lightly myelinated (A-gamma) or unmyelinated (C) nerve fibers?
noxious sensations (e.g., pain)
why is midline generally a safer approach in epidurals?
the epidural venous plexus is concentrated ventrally and laterally and is sparse in the midline
surgeries of the ankle and foot are not amenable to ____ anesthesia (spinal or epidural)? why?
not amenable to epidural anesthesia because the very large spinal nerves at L5 and S1 are difficult to block in the epidural space.
what's an average surgical dose of epidural in the lumbar region?
15ml
in general, how much anesthetic do you need for each spinal segment to be anesthetized with an epidural?
1-2 ml per spinal segment to be anesthetized