CNIM packed exams with solutions

ANASTAMOSIS? -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 ...

Cavities inside the skull Anterior/middle/posterior fossa Cranial bones Frontal, occipital, sphenoid, ethmoid (unpaired). Parietal & temporal (paired). Mental protuberance chin bone MCA supply of the cerebral cortex Hand + face/mouth/auditory Cranial nerves -12 pairs...

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- K+, Na+, and Cl- Excitation of the postsynaptic neuron is caused by the neurotransmitter 1. gamma ami...

Which of the following is least likely to cause electrical interference in the operating room? The pneumatic drill If the monitoring instrument develops an inability to average, steps to take would include all the following except:? Consult with the anesthesiologist anesthesia changes ...

An increase in stimulation intensity causes a linear increase of which of the following SSEP components? 1. N20 2. N45 3. P31 4. P37 3. P31 Epidural electrodes are made of platinum because 1. It is the most durable metal 2. It is the lowest impedance metal 3. The chance of allergic re...

What is the initial event that occurs when the action potential threshold of a neuron is reached? Voltage gated Sodium channels open What does the sodium potassium pump do? Pumps K+ into cell and Na out of cell Which of the following has the greatest effect on SSEP Monitoring? -Fent...

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 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- Abo...

CN I, II, VIII are considered to be: 1 Motor 2 Sensory 3 Both 4 Proprioceptive Only Sensory CN III, Iv, VI, XI, XII are considered to be: 1 Motor 2 Sensory 3 Both 4 Spinothalamic Motor CN V, VII, IX, X are considered to be: 1 Motor 2 Sensory 3 Mixed motor and sensory 4 Mi...

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 ve...

what spinal disorder causes a forward displacement of the vertebra that is commonly seen in the 5th lumbar vertebra spondylolisthesis the number of data points and the sweep time determine horizontal resolution what is the minimum sampling rate for the nyquist frequency? more than d...

n BAEP's, cochlear nucleus lesion causes? Increased III-V, increased I-V Which modality is most useful in monitoring the integrity of the corticospinal tracts during resection of an intramedullary spinal cord tumor? D-Waves The stimulus used in a brainstem auditory evoked potential ...

Cochlear microphonics are used to monitor what? Hair cells What 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 powe...

Chassis leakage less than 100uA Max leakage current (to the patient) less than 10uA differential input impedance 100Mohms Common Mode Rejection 10,000:1 or 80dB Minimum Bandpass 0.1-15,000Hz Horizontal Resolution <20uS/data point (sampling rate > 50,000...

Which of the following are most likely to cause airborne contamination in an operating room? A- ventilation devices B- Kerrison particles C- dust particles D- bloodborne pathogens C- dust particles Stimulus artifact during SSEPs can be decreased by A- keeping the instrument away fro...