Answers
8-13hz 50uV
Alpha wave Occipital leads
Onset sleep
13-35hz <30uV
Beta Waves
Awake
1-4hz >75uV
Delta Waves
Stage 3
, 4-7hz varying amplitude
Theta Waves Stage 1
Central and temporal leads
Theta range
Sawtooth Waves Rem sleep
Frontal and vertex leads
12-14hz <30uV
Sleep spindles Stages 2 and 3
Central leads
Sharp negative wave (>100uV)
K complexes
Stage 2
6-11 hz
Wicket spike waves
Stage 1
a series of short, daytime naps in the sleep lab to measure daytime sleepiness and
Multiple Sleep Latency Test (MSLT)
how fast the patient falls asleep; used to diagnose or rule out narcolepsy
Maintenance of Wakefulness Test (MWT) Evaluates ability to stay awake in a situation conducive to sleep
Stanford Sleepiness Scale (SSS) Self rated sleep diary of alertness/sleepiness throughout day (4-7 have a sleep debt)
Determines how likely PT will Fall asleep in a given scenario, 0-3 scale. Score of 9or<
Epworth Sleepiness Scale
is high index for sleep.
Measures a number of different aspects of sleep disorders:excessive daytime
sleepiness, nocturnal sleep,relaxing ability,energy, etc.-asks patient to score 9
Sleep-Wake Activity Inventory (SWAI)
different statements about sleepiness on a 1-9 scale. (A score of 50 or more is
normal, 40-50 suggests EDS, 40 or less indicated EDS.
a 9-item general fatigue scale used to assess the behavioral consequences of fatigue
Fatigue Severity Scale (FSS) and the impact of fatigue on daily functioning on a 7-point scale (9-35 are normal,
>35 high degree of fatigue)
AHI 5 or more is OSA (1 hr of sleep)
Total of all respiratory disturbance events in one hour
Normal = <5
Respiratory disturbance index Mild = 5-20
Moderate = 20-40
Severe = >40
Highest level for CPAP 20cmH2O
Initial pressure for CPAP 4cmH2O
2
How many obs per 5 mins to bump? (Adl)
1-2cmH2O
3
How many hyp per 5mins to bump? (Adl)
1-2cmH2O
How many RERAS per 5mins to bump? 5
(Adl) 1-2cmH2O
3min
How long of snoring to bump?
1cmH2O
Minimum IPAP-EPAP differential 4cmH2O
Maximum IPAP-EPAP differential 10cmH2O
The beginning of electrical impulses in the sinus node (the first small hump before
P wave (EKG)
the QRS)