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Psg 1 > Test 1 PSG > Flashcards

Test 1 PSG Flashcards

1
Q

Which of the following Usa function of a differential amplifier?

A . To record the differences in the voltages of two inputs.

B. To record the differences in the voltages of the active input and ground.

C. To record the differences in the voltages if an exploring electrode and the patient ground connection.

D. To record only identical voltage reviewed by its two inputs.

A

A. To record the differences in the voltages of two inputs.

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2
Q

If G1 receives an input of ~50uv and G2 simultaneously receives an input of + 50 uv, the signal output will equal

A. 0

B. -100uv

C. +100 uv

D. -50 uv

A

B. -100uv

G1-G2

  • 50 - +50uv
  • 50 - 50 = -100uv
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3
Q

If G1 receives an input of - 100 uv and G2 simultaneously receives an input of -50 uv, the output voltage will equal

A. -50 uv

B. + 50 uv

C. -150 uv

D. +150 uv

A

A. -50uv

G 1-G2

  • 100uv - - 50uv
  • 100 + 50 = -50 uv
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4
Q

An appropriate EEG sin setting is

A. 5uv/mm

B. 5uv/ cm

C. 50 V/ cm

D. A and C are both correct

A

D. A and. c are both correct

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5
Q

The frequency of a waveform can be altered by changing the

A. Sensitivity setting

B. Filters

C. Color

D. Paper speed

A

B. Filters

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6
Q

Changing the sensitivity setting from 20 uV / mm to 40 uV/mm will do what to the appearance of the wave?

A. Double the width of the wave

B. Cut The width of the wave in half

C. Double the height of the wave

D. Cut the height of the wave in half

A

D. Cut the height of the wave in half

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7
Q

Which of these is the best HFF setting for a respiratory channel?

A. 0.5 HZ

B. 1.0HZ

C. 5.0 HZ

D. Off

A

C. 5.0 HZ

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8
Q 
Which of the following is best solution for disinfecting electrodes?
A bleach
B antibacterial soap
C acetone
D alcohol
A

A bleach

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9
Q

3) in addition to EEG, EOG, EMG, (submental) monitoring, what is crucial for the interpretation of a Polysomnographic recording in infants?

A. Body temperature

B. Behavior and observation

C. Physiological calibrations

D. Limb movement (EMG) channel

A

B. Behaviors and observation

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10
Q

2) the initial recording equipment calibration for Polysomnography should show

A

A) 50uv signal introduce to all channels regardless of filters settings

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11
Q

9) an alternating EEG pattern seen in full term sleeping (NREM) infants consisting of both high and low voltage activity is termed

A

C. Trace alternant

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12
Q

The minimum study duration for an accurate assessment of neonatal sleep is

A

B ) 2hrs and or 1 feeding

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13
Q

The EEG is recorded during sleep for the following reasons except:

A

B) to record bradycardia, extrasystoles, and or prences of a systole

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14
Q

19) if abnormal EEG waveforms appear during the PSG, the paper speed should be changed to?

A

30 mm/sec

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15
Q

20) why should backup recording electrodes be placed on the patient?

A

C. To prevent waking the patient to reapplying electrodes

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16
Q

21) the standard chart or paper speed for PSG is:

A

10 mm/sec

17
Q

24). Short time constants should be used when recording which of the following physiologic variables?

A

C. EMG

18
Q

Out of phase signals in LOC. A 2. ROC A 1 derivations indicate

A

C. Eye movement

19
Q

35 During instrumentation calibration, one pen deflection lagging behind the others requires correction of the

A

Time axis

20
Q

36) REM periods become shorter and less intense throughout the sleep period

A

B false

21
Q

What is the best method to eliminate 60hz artifact ?

A

Common mode rejection

22
Q

BIPAP actually assist a pt breathing , similar to

A

Mechanical ventilAtion

23
Q

If using a transcutaneous monitor CO 2 , be attentive to any –_ In CO2 be attentive to

A

Any increase in CO 2

24
Q

MSLT
Naps
Duration
__ hrs

4 naps appropriate if

A

4-5 naps
Duration 20min
Hrs. 2 apart
4 naps REM occurs 2 of the 4 naps

25
Q

MSLT
Rm should be
First nap begins

A

1.5-2 hrs after the overnight study has concluded

26
Q

MSLT 4 hr nap unreliable for narcolepsy unless

A

Pt has 2 REM. In the 4 hr nap

27
Q

Cancel MSLT if split night study,

If total sleep time less. Than

A

If total sleep that Is less than 6 hrs

28
Q

End MSLT

A

No sleep after 20 min

After 15 min of continuos monitoring following sleep onset

29
Q

MSLT

Sleep

A

Sleep questionnaire is filled out before and after. N

Psg 1 (29 decks)

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