Miscellaneous monitors & equipment Flashcards
Choose the statements that MOST accurately describe the Bispectral Index monitor. Select 2
a. ketamine falsely elevates the BIS value
b. the BIS value is calculated in real time
c. The BIS value and Patient Safety index value are interpreted in the same way
d. Burst suppression begins at a BIS value of 20
a. ketamine falsely elevates the BIS value
d. burst suppression begins at a BIS value of 20
The bispectral index monitor uses a computer algorithm that translates raw EEG data into
a number between 0-100
A BIS value of 100 indicates
fully awake
A BIS value of 80 indicates
moderate sedation
A BIS value of 40-60 indicates
general anesthesia
A BIS value of 40 indicates
a deep hypnotic state
A BIS value of 20 indicates
burst suppression
A BIS value of 0 indicates
absence of electrical activity
The accuracy of the BIS is affected by
hypothermia
EMG interference (increased muscle tone)
encephalopathy
ketamine
The patient state index is similar to the BIS, however the target range for general anesthesia is
25-50
As the level of anesthesia becomes deeper, the EEG waveforms exhibit a
lower frequency
higher amplitude
The BIS is less accurate in
children
Select the statement that MOST accurately describes the function of the line isolation monitor.
a. if a piece of equipment becomes grounded, it cuts off the power supply to that piece of equipment
b. it protects the patient from microshock
c. The alarm sounds when the OR power supply becomes grounded
d. It isolates electrical equipment from the ground
c. the alarm sounds when the OR power supply becomes grounded
An electrical current that enters the body will exit the body along
the path of least resistance
Consequences of electrical injury include
cardiac arrhythmias
nerve injury–> muscle contractions & diaphragmatic paralysis
thermal injury