PSG Criteria

Question 1

Frequency of alpha waves?

Answer 1

8 - 13 Hz

Question 2

Frequency of Theta (LAMF) waves?

Answer 2

4 - 7.99

Question 3

Frequency of delta waves (slow waves)

Answer 3

0.5 - 3.99 Hz

Question 4

Frequency of K-complexes

Answer 4

< 2 Hz

Question 5

Frequency of sleep spindles

Answer 5

11 - 16 Hz

Question 6

Frequency of Vertex Sharp Waves

Answer 6

2+ Hz

Question 7

Frequency of Sawtooth waves

Answer 7

2 - 6 Hz

Question 8

Distribution of alpha waves

Answer 8

Occipital

Question 9

Distribution of theta waves

Answer 9

not defined

Question 10

Distribution of slow waves

Answer 10

Frontal

Question 11

Distribution of K-complexes

Answer 11

Frontal

Question 12

Distribution of sleep spindles

Answer 12

Central

Question 13

Distribution of Vertex sharp Waves

Answer 13

Central

Question 14

Distribution of sawtooth waves

Answer 14

Central

Question 15

How to score N1 in patients without alpha activity?

Answer 15

Theta activity with slowing of the EEG by > 1 Hz from wake with vertex sharp waves and slow rolling eye movements frequently seen.

Question 16

How to score N3

Answer 16

20% or 6 seconds of slow wave forms

Question 17

How many Leg Movements are required for PLM

Answer 17

4+ consecutive LMs

Question 18

What period is required for LMs to count towards PLM?

Answer 18

5 - 90 seconds

Question 19

Do you core LMs around an apnea?

Answer 19

No, do not score LM within 0.5s of an apnea

Question 20

What is the definition of a leg movement (3)

Answer 20

1. Duration of 0.5 - 10s
2. Amplitude > 8uV above baseline
3. Timing is the point 8uV above baseline to < 2 uV above baseline

Question 21

Bruxism definition

Answer 21

brief or sustained EMG activity at least twice the amplitude of the background EMB. Phasic duration is 0.25 - 2s and > 3 elevations in a regular sequence. Tonic activity is > 2 s.

Question 22

What’s the optimal sensor to detect an apnea?

Answer 22

Nasal pressure transducer

Question 23

What is the optimal sensor to detect hypopneas

Answer 23

Nasal pressure transducer or thermal sensors

Question 24

Definition of hypoventilation.

Answer 24

• Increase in PCO2 to >55 for >10min
• > 10mmHg increase in PCO2 during sleep compared with awake to a value exceeding 50mmHg for >10min
• Low oxygen saturation not sufficient

Question 25

What stage (s) of sleep is Cheyne-Stokes Breathing present?

Answer 25

N1 and N2

Question 26

is Cheyne-Stokes Breathing increased or absent in REM?

Answer 26

Absent / attenuated?

Question 27

Criteria for is Cheyne-Stokes Breathing.

Answer 27

3 or more cycles of rising / falling breathing cycles for >40s

5 or more central apneas or hypopneas per hour of sleep for at least 2 hours