Equipment Operation & Patient Preparation

Question 1

What is the most definitive resource for documenting seizure activity and parasomnias?

Answer 1

Visual recording

Question 2

Recorded video data must be ___ and have an accuracy of at least ___ video frame per second

Answer 2

Synchronized with polysomnography data

At least 1 video frame per second

Question 3

Light therapy can reset the ___ and suppress the body’s natural release of ___.

Answer 3

Circadian pacemaker, melatonin

Question 4

Light therapy intensity is measured in ___. A minimum of ___ is needed to be effective. Normal for most patients is ___.

Answer 4

Lux
2,500 lux
10,000 lux (B-31 & B-32)

Question 5

What does actigraphy measure?

Answer 5

Activity level of the patient for days or weeks

Question 6

Reducing valves have two gauges on them. What do they show?

Answer 6

How much gas in in a tank and how much pressure is being supplied. (Usually 50 psi) (B-34)

Question 7

How does an O2 concentrator work?

Answer 7

1. Unit sucks in ambient air
2. A molecular sieve removed nitrogen and other gasses
3. Only O2 is left.

Question 8

Besides O2 flammability, what other two safety measures must be considered when using an oxygen concentrator?

Answer 8

Properly grounded electrical outlet is required

A backup O2 cylinder is required in case of power failure

Question 9

Don’t place electrodes too close together. It can cause artifact from ___.

Answer 9

Salt bridge

Question 10

Exploring electrodes use ___ sites.

Reference electrodes use ___ sites.

Answer 10

Exploring: 6 sites
Reference: 4 sites

Question 11

When placing electrodes, the even numbered electrodes go on the (left or right) side of the head.

Answer 11

Right

Question 12

When placing electrodes, the odd numbered electrodes go on the (left or right) side of the head.

Answer 12

Left

Question 13

There are five planes where electrodes are placed in a full EEG hookup. What are they?

Answer 13

Frontal
Central
Parietal
Occipital
Temporal

Question 14

When naming electrodes, what does Z stand for?

Answer 14

The center of the head, or zero.

Question 15

How do you space electrodes FpZ, FZ, CZ, PZ, and OZ apart from each other? Roughly where on the head are these electrodes?

Answer 15

Measure total distance. Each electrode should be 20% of the distance from one another.
They cross on top of the head, going down the front, back, and sides.

Question 16

How do you space electrodes F7, F3, FZ, F4, and F8 apart from each other? Roughly where on the head are these electrodes?

Answer 16

25% of total distance apart

They’re above the front of the head

Question 17

How do you space electrodes T5, P3, PZ, P4, and T6 apart from each other?
Roughly where on the head are these electrodes?

Answer 17

25% of total distance apart

They’re above the back of the head (lambdoid suture)

Question 18

How do you space electrodes FpZ, Fp2, F8, T6, O2, OZ, O1, T5, F7, and Fp1 apart from one another?
Roughly where on the head are these electrodes?

Answer 18

10% of total distance apart.

They go around the circumference of the head. (Like a crown.)

Question 19

Where do you place eye electrodes?

Answer 19

Right eye: Place 1 cm out and 1 cm up.

Left eye: Place 1 cm out and 1 cm down.

Question 20

What do you use to secure eye electrodes?

You should not use ___.

Answer 20

Double sided electrode tape. Do not use collodion.

Question 21

When a patient goes into REM sleep, what can you notice in the chin mucles?

Answer 21

Decreased activity

Question 22

How do you place the chin electrodes?

Answer 22

2-3 cm below the lower lip and 3-4 cm apart.
A third electrode may be placed in the middle as a backup for referencing.
(Don’t place over bone. Place over muscle.)

Question 23

Where is the snore sensor placed?

Answer 23

Side of the neck, 3-4 cm from middle of throat.

Question 24

How do you place leg electrodes?

How far apart should the electrodes be?

Answer 24

Place on anterior tibialis muscle on each leg. (Outside of the lower calf). Electrodes should be 2-3 cm apart.

Question 25

Standard sleep studies do not usually require electrodes on the arm. If they are used, where do the electrodes go?

Answer 25

Directly over the extensor digitorum (forearm muscle)

Question 26

Where is the RIP belt placed? x2

Answer 26

Thoracic belt placed just below nipple line.

Abdominal belt placed at the bulge of the abdomen.

Question 27

Before placing an electrode, what should you do to prepare the skin?

Answer 27

Clean area with alcohol to remove soap and oils.