-Hoffman's Reflex (1918) - -Palmar flexion of the thumb when the distal phalanx of the
middle finger (of the same hand) is rapidly stroked
-A nml curve of the lumbar spine taking place @ 1-2 y/o - -Kyphosis
, -Scoliosis progression in peds - -More likely in girls > boys
-Apraxia - -Difficulty w/ skilled mvmnts
-Neurapraxia - -PNS disorder: blockage of sensory + motor nerve conduction (w/o
axonal damage)
-INC venous pressure leads to - --venous congestion; DEC drainage of nml veins;
chronic hypoxia
-NOT hypotension
-common source of air embolism introduction into the blood supply - -Superior sagittal
sinus
-MAC is approximated by the effect of anesthesia on - -H-reflex (mvmnt when
stimulated)
-Sevo/Des/N2O - -DO NOT act on the same neuronal receptors
-On an equi-MAC basis (w/ equivalent doses of anes), which has the greatest effect on
MEPs of recorded mm's? - -N2O
-N2O - --synergistic IONM effects when mixed w/ Iso --> depressed IONM
-weak anesthetic agent
-causes ~75% DEC in SSEP amplitudes
-Desflurane - --affects NMJ --> enhances effect of NMBs
-no effect on MEP CMAPs
-eliminates most rapidly
-Isoflurane 1.7% - -may result in burst suppression
-TIVA MoA on pt mvmnt - -Glycine receptor blocking in the SC
-Which is not a major MoA of the usual anesthetic agents that affect IONM? - -
Inhibition of nerve conduction velocity
-EP modality most affected by propofol - -Mid-latency auditory response
-Ketamine - -(NMDA antagonist)
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