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A
B C D E F
G H I J K
L M N O P
Q R S T U
V W X Y Z
A
Arousal:
An interruption of sleep lasting greater than 3 seconds.
B
BR Arousal index:
The number of
breathing related arousals(apnea, hypopnea, snoring & RERAs)multiplied by
the # hours of sleep.
Bruxism: Grinding
of the teeth.
C top
Central apnea: A respiratory
episode where there is no airflow and no effort to breathe lasting greater than
10 seconds.
D
E
EEG/EOG: Comments about sleep
stages, brain waves (EEG), or eye movements (EOG)
EKG/ECG: Comments
about heart rate, abnormal heart beats, etc.
EMG: Comments
about leg movements and or teeth grinding (bruxism).
F
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G
H
Hypopnea: A respiratory episode
where there is partial obstruction of the airway lasting greater than 10
seconds. Also called partial apnea
or hypo-apnea.
I
J
K top
L
M
N
Non-supine: Sleeping in any
position other than on the back.
NSR:
Normal sinus rhythm.
NPSG:
Nocturnal Polysomnogram, or sleep study.
(#)Number of Awakenings: The
number of pages scored as wake after sleep onset.
O
Obstructive apnea: A respiratory
episode where there is a complete cessation of airflow lasting
greater than 10 seconds.
P
PLMs: Periodic limb movements.
PLM arousal index: The
number of periodic limb movements that cause arousals multiplied by the number
of hours of sleep.
PSGT: Polysomnographic
technologist.
Q
R
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REM latency: Latency to
REM(dreaming) from sleep onset.
RERAs: Respiratory effort related
arousals. Episodes
that are not apneas or hypopneas, often related to loud snoring, that generally
do not cause a decrease in oxygen saturation.
Respiratory: Any
specific comments about respiratory events.
RPSGT:
Registered polysomnographic technologist.
S
Sleep efficiency: Total sleep time
multiplied by time in bed.
Sleep latency: The
first 30 seconds (one `epoch' of recording time) of sleep.
Sleep onset:
The first 90 seconds (3 `epochs) of
uninterrupted sleep.
Sleep stage shifts:
The number of incidents of sleep stage changes.
Snoring intensity:
Level of snoring loudness determined by the sleep technologist.
Ranging in degrees from mild to very loud snoring.
Spontaneous arousal index:
The number of spontaneous arousals (e.g. arousals not related to respiratory
events, limb movements, snoring, etc) multiplied by the number of hours of
sleep.
Stage 1:
The lightest stage of sleep. Transitional
stage from wake. top
Stage 1 shifts:
The number of times the sleep stage changed to stage 1.
Stage 2:
The first true stage of sleep.
Stages 3/4: The deepest, most restorative sleep.
Stage
REM: The dreaming stage; Normally occurs every
60-90 minutes.
Supine:
Sleeping on back.
T
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Time in bed: The time in the
study from `Lights Out' to `Lights On'.
Total arousal index:
Total number of all arousals multiplied by the number of hours of sleep.
Total # of PLMs:
The number of leg movements in sleep that last greater than 0.5 seconds.
Total sleep time:
Total time asleep.
U
V
W
WASO: Wakefulness after sleep onset.
WNL: Within normal limits.
X
Y
Z
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