Tibial far field response Study guides, Class notes & Summaries

Diabetes Mellitus Peripheral Neuropathy To display median nerve SSEP response as an upward deflection, which of the following must be known? Waveform polarity and polarity convention of the amplifier inputs The facial nerve enervates all of the following structures except: Tensor veli palatini muscle For preoperative posterior tibial somatosensory evoked potentials, which of the following would be the best ipsilateral location for the ground electrode? Calf "Cent...

Which of the following devices measure electrode resistance? A) Ammeter B) Ohmmeter C) Voltmeter D) Photometer - ANSWER-B) Ohmeter If an evoked potential has a boltage of 10uV and the associated noise has a voltage of 50uV, what is the signal-to-noise ratio after 100 averaged responses? A) 1:1 B) 1:2 C) 2:1 D) 5:1 - ANSWER-C) 2:1 To display median nerve SSEP response as an upward deflection, which of the following must be known? A) Waveform polarity and latency of the response B)...

When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel records - Answer 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 - Answer Fz An electrode measured 20% lateral to Cz on the right using 10 ‐ 20 system is - Answer C4 P14 is a far ‐ field, subcortically generated response which probably reflects - Answer caudal medial lemniscal activity If over th...

CNIM Exam Questions With Correct Solutions | Latest Update Graded A+. 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 Cl4. Na+, Ca++ and Cl- - Answer K+, Na+, and ClExcitation of the postsynaptic neuron is caused by the neurotransmitter 1. gamma amino butyric acid 2. glycine 3. para amino butyric acid 4. glutamate - Answer Glutamate Wave III of the BAER is generated by the 1. su...

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 significant artifact The stimulation rate is determined by the -c...

in which of the following evoked potentials is the scalp position of recording electrodes most critical? - correct answer Lower extremitity SSEP if an evoked potential has a voltage of 10 uV and the associated noise has a voltage of 50uV, waht is the signal to noise ration after 100 averages responses? - correct answer 2:1 To display median nerve SSEP response as an upward deflection, which of the following must be known? - correct answer waveform polarity and polarity convention of the am...

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...

You record a spinal potentialto: - correct answer Establish an Action potential (AP) What drugs would you use for language mapping? - correct answer Fentanyl D waves are recorded form which of the following electrodes? - correct answer Epidural electrodes over the spinal cord. Horizontal Dipole: - correct answer P14 What nerve roots are being monitored using the Peroneus longus muscle? - correct answer L5-S2 Which is the main reason for measuring impedances of all electrodes? - co...

EMT-B Midterm Chapters 1-23 Questions & Answers. An EMS provider who has extensive training in various aspects of advanced life support (ALS) is called: A. paramedic. B. advanced EMT (AEMT). C. EMT. D. EMR. If a defibrillator manufacturer claims that its device terminates ventricular fibrillation on the first shock 95% of the time, you should: A. avoid purchasing the device because this claim is unrealistic. B. recognize that this does not mean it will save more lives. C. purcha...

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...