Ptn - Study guides, Class notes & Summaries

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 To dissect a vestibular schwannoma, which surgical approach usually sacrifices hearing? suboccipital retrosigmoid middle cranial fossa translabyrinthine - answer-translabyrinthine According to current OSHA standards, needle electrodes should be reused whenever possible not be soaked in ...

CNIM Review - SSEP Question and answers already passed 2024 PTN peak analogous to P14 of Median N SSEP - correct answer P31 in SSEP monitoring during spinal cord surgery, an epidural electrode is placed caudal to the surgical site is used to - correct answer verify adequate stimulation to record to afferent volley after PTN stimulation, an electrode should be placed on the - correct answer T5 spine what is an appropriate filter for a short latency SSEP cortical response? - correct ...

Cnim topics exam questions with correct answersIn the operating room, the stimulus intensity for activating a sensory nerve: - ANSWER-Does not have an established boundary A benefit of recording epidural SSEPs caudal to the surgical site is: - ANSWER-Ability to detect changes peripheral to the surgical site During a tumor surgery at T6, epidural electrodes are placed at T4 and at T8 to monitor SSEPs. What would be expected with a surgical manipulation of dorsal column tracts? - ANSWER-Loss...

During a scoliosis surgery, you recognize a gradual latency increase of 3.5 msec in the PTN cortical response, the subcortical response appears to be shifted out almost as much. All response amplitudes are unchanged. What is the appropriate action to take? a. Ignore the change, it means nothing. b. Inform the surgeon immediately that changes consistent with spinal cord injury may have occurred. Recommend a wake up test. c. Check the latencies of the PF and MN responses to see if they are also sh...

CNIM practice exam 3 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 To dissect a vestibular schwannoma, which surgical approach usually sacrifices hearing? suboccipital retrosigmoid middle cranial fossa translabyrinthine - answer-translabyrinthine According to current OSHA standards, needle electrodes should be reused whenever possible not...

CNIM Review - SSEP Question and answers 2024 verified to passCNIM Review - SSEP PTN peak analogous to P14 of Median N SSEP - correct answer P31 in SSEP monitoring during spinal cord surgery, an epidural electrode is placed caudal to the surgical site is used to - correct answer verify adequate stimulation to record to afferent volley after PTN stimulation, an electrode should be placed on the - correct answer T5 spine what is an appropriate filter for a short latency SSEP cortic...

Cnim 1000 practice questions Fixed During a scoliosis surgery, you recognize a gradual latency increase of 3.5 msec in the PTN cortical response, the subcortical response appears to be shifted out almost as much. All response amplitudes are unchanged. What is the appropriate action to take? a. Ignore the change, it means nothing. b. Inform the surgeon immediately that changes consistent with spinal cord injury may have occurred. Recommend a wake up test. c. Check the latencies of the PF an...

CNIM - Practice Questions 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) ...

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? - Decrease number of repetitions What is not an advantage of epidural recordings? - Absence of significant artifact The stimulation rate is determined by the - ana...

CNIM Practice Exam 1During 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 significant artifact The stimulation rate i...