Ptn - Study guides, Class notes & Summaries

Multiple sclerosis, spinal cord injury, and brain trauma can lead to debilitating spasticity that has been relieved in some patients following: - CORRECT ANSWER selective dorsal rhizotomy If a 10 microvolt signal inside 50 microvolts of noise is averaged for 100 traces, the final signal to noise ratio will be: - CORRECT ANSWER 2:1 A patient in a state of surgical anesthesia using nitrous oxide is likely to have a drop in SSEP amplitudes of - CORRECT ANSWER 0.75 What is the minimum bandp...

2024 CNIM Practice Exam 3 New Full Exam Questions and Answers ( Included ) 100% Correct 1. If you have high frequency noise in a BAEP: A100/100 pts Change HFF from 3000 to 1500 Hz Change HFF to 200 Hz Change LFF to 150 Hz Change LFF to 30 Hz Answer: Change HFF from 3000 to 1500 Hz 2. To dissect a vestibular schwannoma, which surgical approach usually sacrifices hearing? suboccipital retrosigmoid middle cranial fossa translabyrinthine Answer: translabyrinthine 3. According to curr...

During a median nerve preoperative study, a patient has discomfort at the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20 mA, and stimulus duration is 100 μsec. Which of the following would most likely reduce the patient's discomfort while maintaining adequate stimulation? - ANSWER: Decrease number of repetitions What is not an advantage of epidural recordings? - ANSWER: Absence of significant artifact The stimulation rate is determined by the - ANSWER: ana...

CNIM Practice Exam 1 Question and answers rated A+ 2024 During a median nerve preoperative study, a patient has discomfort at the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20 mA, and stimulus duration is 100 μsec. Which of the following would most likely reduce the patient's discomfort while maintaining adequate stimulation? - correct answer Decrease number of repetitions What is not an advantage of epidural recordings? - correct answer Absence of significa...

What time constant would be the most effective for cutting out low frequency noise from your SSEP cortical responses? - ANSWER--Answer: 10 mS SSEP cortical responses are in the typical frequency range of 100-200 Hz. That being said, let's see what time constant would give us a good Low Frequency Filter. Remember LFF filters out everything below the cut off frequency and passes higher frequencies. Formula to know: Cut off Frequency = 1 / Time Constant (tc) 1/.01 s = 100 Hz 10 ms = .01 s ...

During a median nerve preoperative study, a patient has discomfort at the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20 mA, and stimulus duration is 100 μsec. Which of the following would most likely reduce the patient's discomfort while maintaining adequate stimulation? - Decrease number of repetitions What is not an advantage of epidural recordings? - Absence of significant artifact The stimulation rate is determined by the - analysis time Somatosensory e...

CNIM EXAM the artery of adamkiewicz is - ANSWER-a major feeder vessle to the spinal cord, supplies from the anterior spinal artery, supplies 2/3 of blood to lower body, at T10 a stroke in which artery would specifically affect the PTN cortical SEP - ANSWER-the anterior cerebral artery trancranial motor evoked potentials transmit primarily through which spinal cord tract? - ANSWER-the lateral corticospinal tract PTN evoked potentials transmit primarily through which spinal cord tract - ANS...

CNIM Practice Exam 1 Question and answers rated A+ 2024 CNIM Practice Exam 1 During a median nerve preoperative study, a patient has discomfort at the wrist. Stimulation electrodes are 10 mm gold disk, stimulus intensity is 20 mA, and stimulus duration is 100 μsec. Which of the following would most likely reduce the patient's discomfort while maintaining adequate stimulation? - correct answer Decrease number of repetitions What is not an advantage of epidural recordings? - correct...

CNIM practice exam #2 100% Solved Universal precautions eliminate potential contact with body fluids that transmit: electrical current bloodborne pathogens meningitis bacteriostatic viruses - ANSbloodborne pathogens When at the state of surgical anesthesia, the principal effect of Etomidate on evoked potentials is to: decrease amplitudes increase latencies increase amplitudes decrease absolute latencies - ANSincrease amplitudes The sensitivity setting on an amplifier set to produce a...

CNIM - ABRET Practice Exam 2024 Graded A+ Questions With 100% Correct Answers. 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 displaceme...