Neuro Clinical Monitoring Flashcards

1
Q

Which test of neuromuscular function consists of continuous stimulation for five seconds at 50 Hz or 100 Hz?

A

Tetanus

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2
Q

What is the gold standard for measuring core body temperature?

A

Pulm Artery Cath. The most precise and accurate.

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3
Q

Burst suppression is best characterized on an EEG as:

A

Alternating episodes of isoelectricty (0 or low voltage) and high voltage active oscillations on an EEG. Denotes minimal neuronal activity.

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4
Q

A frequency of _______ characterizes alpha waves on an EEG and are present in an _____ patient

A

8-12Hz and alert patient

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5
Q

A frequency of _______ characterizes beta waves on an EEG and are present in an _____ patient

A

13-25Hz
arousable state of sedation

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6
Q

Loss of cortical electrical activity on an EEG is characterized by?

A

Complete loss of cortical electrical activity. present in unanesthetized comatose patients - poor prognosis

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7
Q

Jugular venous oximetry monitoring is optimally measured at which vertebrae level?

A

C1-C2

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8
Q

What neuro clinical monitoring can be done under anesthesia?

A
  1. Cerebral Electrical Activity
  2. Cerebral Blood Flow (CBF)
  3. Cerebral Oxygen Content
  4. Intracranial Pressure
  5. Cerebral Metabolic Rate of Oxygen Consumption
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9
Q

How is cerebral electrical activity monitored?

A

EEG and EVPs (evoked potentials)

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10
Q

How is cerebral blood flow monitored?

A

Transcranial Doppler Ultrasound (TCD)

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11
Q

How is cerebral oxygen content monitored?

A

NIRS
Near Infrared Spectrometry

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12
Q

How is intracranial pressure monitored?

A

Intraventricular catheters and fiberoptic and intraparenchymal micro transducers

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13
Q

How is cerebral metabolic rate of oxygen consumption (CMRO2) monitored?

A

JVO2 - jugular venous oximetry or intracerebral partial pressure of oxygen (pO2) electrodes

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14
Q

As ischemia or hypoxia increase, what brain eeg wave changes occur?

A

beta waves begin to disappear, and low-amplitude delta waves appear. (delta wave usually high amplitude). This progresses to electrical activity impression with occasional bursts of activity.

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15
Q

Wave changes with the onset of ischemia or hypoxia?

A

Transient increase in beta waves with the eventual development of increased amplitude theta and delta waves.

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