Cnim stuvia - Study guides, Class notes & Summaries

The vertical resolution of an evoked potential system depends primarily on: A) The analysis period B) The sampling rate C) The filter settings D) The number of bits in the A/D converter - ANSWERSD) The number of bits in the A/D converter Which time constant would be most effective for cutting out low frequency noise from your signal? A) 10ms B) 100ms C) 1s D) 10s - ANSWERSA) 10ms How frequently should the evoked potential machines be calibrated and safety tested? A) Only when ther...

Hair cells - ANSWERSCochlear microphonics are used to monitor what? Increase in delta power and increase in alpha-beta power - ANSWERSWhat is the effect on EEG from induction using isoflurane? A. Decreased delta followed by increased alpha/beta B. Increase in delta power and increase in alpha-beta power C. Increase in low-voltage fast activity D. Increased power at all frequencies limb length - ANSWERSWhat determines the latency of SSEPs most? Lowering the impedances of ground and s...

what spinal disorder causes a forward displacement of the vertebra that is commonly seen in the 5th lumbar vertebra -ANSWER spondylolisthesis the number of data points and the sweep time determine -ANSWER horizontal resolution what is the minimum sampling rate for the nyquist frequency? -ANSWER more than double the fastest frequency of the waveform what type of glial cells make up the myelin sheath of the peripheral nervous system? -ANSWER schwann cells during a CEA, collateral perfu...

Cavities inside the skull -ANSWER Anterior/middle/posterior fossa Cranial bones -ANSWER Frontal, occipital, sphenoid, ethmoid (unpaired). Parietal & temporal (paired). Mental protuberance -ANSWER chin bone MCA supply of the cerebral cortex -ANSWER Hand + face/mouth/auditory Cranial nerves -ANSWER -12 pairs (Mixed fibers: sensory/motor/both). -Emerge @ irregular intervals from the brain. -Nuclei displacement: Motor = medial Sensory = lateral Meckle's Cave -ANSWER Depression in ...

ANASTAMOSIS? - ANSWER-CONNECTION or opening BETWEEN two things (especially cavities or passages) that are normally diverging or branching, such as between blood vessels. -COMMUNICATION BETWEEN ARTERIES What causes the most airborne bacteria in OR? a. blood on gown b. blood spill c. skin shed d. patient vent - ANSWERc. skin shed Nerve that innervates 4th and 5th fingers? - ANSWERUlnar Nerve Problem with Bilateral Synchronus Stim? - ANSWERCan mask unilateral problems No N20 at b...

Resting membrane potential is created by differences between the inside and outside of the cell in ion concentrations of 1. K+ 2. K+ and Ca++ 3. K+, Na+ and Cl- 4. Na+, Ca++ and Cl- - ANSWERK+, Na+, and Cl- Excitation of the postsynaptic neuron is caused by the neurotransmitter 1. gamma amino butyric acid 2. glycine 3. para amino butyric acid 4. glutamate - ANSWERGlutamate Wave III of the BAER is generated by the 1. superior olivary complex 2. inferior colliculus 3. latera...

Which of the following is a clinical indication of a lower motor neuron lesion? - ANSWERFasciculation A stroke associated with a carotid endarterectomy will most likely occur: - ANSWERAfter cross-clamping Troubleshooting in the operating room is facilitated by - ANSWERviewing the raw signal input. Which TcMEP wave is MOST affected by a bolus of 30 mg rocuronium? - ANSWERI-Wave During a posterior cervical fusion for spinal stenosis, a global shift in latency cortical and subcortical u...

5-136 At what rate do skin cells exfoliate from OR personnel? A- 10,000 cells per hour B- 20,000 cells per hour C- 50,000 cells per hour D- 30,000 cells per hour - ANSWERC- 50,000 cells per hour 5-214 When is it most appropriate to alert the surgeon of a problem with the monitoring? A- When any change occurs B- After a loss of 30% and 5% latency C- After all waveforms are lost D- After a loss of 55% amplitude - ANSWERD- After a loss of 55% amplitude 5-15...

The vertical resolution of an evoked potential system depends primarily on: A) The analysis period B) The sampling rate C) The filter settings D) The number of bits in the A/D converter -ANSWER D) The number of bits in the A/D converter Which time constant would be most effective for cutting out low frequency noise from your signal? A) 10ms B) 100ms C) 1s D) 10s -ANSWER A) 10ms How frequently should the evoked potential machines be calibrated and safety tested? A) Only when there ...

Which of the following is a clinical indication of a lower motor neuron lesion? - ANSWERFasciculation A stroke associated with a carotid endarterectomy will most likely occur: - ANSWERAfter cross-clamping Troubleshooting in the operating room is facilitated by - ANSWERviewing the raw signal input. Which TcMEP wave is MOST affected by a bolus of 30 mg rocuronium? - ANSWERI-Wave During a posterior cervical fusion for spinal stenosis, a global shift in latency cortical and subcortical u...