When recording a ptn ssep - Study guides, Class notes & Summaries

CNIM - SSEP NEWEST 2024 ACTUAL EXAM COMPLETE 175 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+

White matter consists of what type of fiber tracts? - ANSWER-Axon of nerve fibers In the visual pathway, fibers anterior to the optic chiasm are called - ANSWER-Optic Nerves If a neurologist suspects nerve damage in a PTs neurological exam, he may order - ANSWER-Nerve conduction/EMG excitatory neurotransmitter - ANSWER-Glutamate The trigeminal nerve can be monitored from which muscle? - ANSWER-Masseter Damage to which structure would most likely result in motor deficits - ANSWER-L...

When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel records A- subcortical near‐field potentials B- the Erb's point potential C- stationary lumbar potentials D- subcortical far ‐ field potentials CORRECT ANSWER D- subcortical far ‐ field potentials In the 10 ‐ 20 system of electrode placement, the point 20% (of the nasion‐inion distance) anterior to Cz is called A- Fz B- Fpz C- C1 D- Pz CORRECT ANSWER A- Fz An electrode measured 20% lateral to Cz on the...

A patient with a body temperature of 30 degrees C will have: A- Decreased latencies B- Decreased latencies, decreased amplitudes C- Increased latencies D- Increased latencies, decreased amplitudes - ANSWER-C- Increased latencies The P31 response to posterior tibial nerve stimulation: A- Is recordable over a generalized region of scalp B- Is best recorded by an electrode placed at CS5 C- Is generated by the thalamus D- Reflects post-synaptic activity in the cervical spinal cord - A...

During electrocautery you should... - ANSWER-Pause Recording SSEPs are less reliable in patients with... - ANSWER-Neuromuscular disease After-discharges occur after what? - ANSWER-Direct cortical stimulation In order to reduce stimulus artifact, the ground electrode shoudl be placed... - ANSWER-On the limb between the stimulating and recording electrodes Which of the following is the most effected by halogenated agents? - ANSWER-Posterior Tibial cortical potential The nerve roott ...

Coulomb's Law - Answer- The force exerted between two charges is inversely proportional to the square of the distance between them. F=1/(distance)^2 Voltage - Answer- an electromotive force or potential difference expressed in volts. Current - Answer- Movement of charge (Amps) Ohm's Law - Answer- V=IR Resistance is opposition to ____ Impedance is opposition to _____ - Answer- Resistance is opposition to DC flow Impedence is opposition to AC flow Resistors in Series (Voltage ...

If the VIIIth nerve were transected, you would get A- No change B- Increased I-III latency C- Loss of wave III - V D- Absence of all waves I-V - Answer- D- Absence of all waves I-V Epidural electrodes should be placed: A- Inside the spinal cord B- Between the dura and the spinal cord C- Above the dura D- Above the lamina - Answer- C- Above the dura Early changes to CMAPs, during the exposure of CN VII, are most likely due to: A- an increase in inhalation agents B- severe bl...

A pneumatic drill would introduce what kind of artifact? - ANSWER-500 Hz Which of the following diseases results from infection by a bloodborne pathogen? - ANSWER-Hepatitis B Annular disruption - ANSWER-Disc herniation Which of the following the down going potential recorded at about 12 msec following stimulation of the ear in the following diagram? - ANSWER-Postauricular muscle reflex Facial nerve spontaneous EMG is recommended to be recorded with - ANSWER-subdermal electrodes wh...

CNIM REVIEWED QUESTIONS AND ANSWERS Which of the following is a clinical indication of a lower motor neuron lesion? - CORRECT ANSWER-Fasciculation A stroke associated with a carotid endarterectomy will most likely occur: - CORRECT ANSWER-After cross-clamping Troubleshooting in the operating room is facilitated by - CORRECT ANSWER-viewing the raw signal input. Which TcMEP wave is MOST affected by a bolus of 30 mg rocuronium? - CORRECT ANSWER-I-Wave During a posterior cervical fusion...

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-Depressi...