Hope2SleepGuide

Sleep Apnoea Forum Bringing Help + Support to the Patient

A to Zzz's of Sleep Definitions and Abbreviations

A to Zzz of SLEEP DEFINITIONS AND ABBREVIATIONS


APNOEA:  Without Breath (also spelt Apnea in some countries).  Therefore, Sleep Apnoea means pauses in breathing whilst sleeping.


APNOEA/HYPOPNOEA INDEX (AHI):  The number of apnoea/hypopnoea incidents per hour.


APNOEA INDEX (AI):  The number of apnoea events per hour.


AROUSAL:  Going from sleep to wakefulness, or from a deeper to lighter stage of sleep.


APAP:  Automatic Positive Airway Pressure Machine (Automatic CPAP), which automatically adjusts the level of pressure needed on a breath-by-breath basis.   Useful for people on high pressures or who find it difficult to tolerate the pressure needed.


BI-PAP:  Bi-level Pressure Machine with 2 pressures – a lower pressure for exhalation and a higher pressure for inhalation.  (Useful for people who find it difficult to exhale against the pressure). 


BRUXISM:  Teeth grinding during sleep.


CENTRAL SLEEP APNOEA (CSA):  Absence of breath caused by irregularity in the brain’s control of breathing. 


CPAP:  Continuous Positive Airway Pressure Machine with one fixed pressure giving constant same-pressure therapy to keep the airways open.


EPAP:  Expiratory Positive Airway Pressure prescribed for the expiratory (breathing out) phase of a person on Bi-level CPAP therapy.


FLOW LIMITATION:  Partial closure of the upper airway impeding the flow of air into the lungs.


GERD (GASTROESPHAGEAL REFLUX DISEASE):  Flow of stomach acid upwards into the esophagus that can cause arousals and disrupt sleep. 


HST:  Home sleep study

 

HYPERSOMNIA:  Excessive daytime sleepiness.


HYPNOTICS:  Sleep-inducing medication.


HYPOPNOEA:  Shallow breathing, often accompanied by oxygen desaturation.


HYPOVENTILATION:  Decreased rate of breathing.


INSOMNIA:  Difficulty in falling and/or staying asleep.


INSPIRATORY POSITIVE AIRWAY PRESSURE (IPAP):  Pressure prescribed for the inspiratory phase of a person on Bi-level CPAP therapy.


LASER ASSISTED UVULOPALATOPLASTY (LAUP):   Operation using a laser to make some small cuts in your soft palate to make it firmer and hopefully reduce snoring. 


MICROSLEEP:  Sleep episode lasting from a fraction of a second up to 30 seconds – normally as a result of sleep deprivation. 


MIXED SLEEP APNOEA: A combination of Central and Obstructive Sleep Apnoea.


NARCOLEPSY:  A sleep disorder that causes excessive sleepiness and frequent daytime sleep attacks. 


NOCTURIA: Excessive, often frequent, urination during the night.


OBSTRUCTIVE SLEEP APNOEA (OSA):  Sleep disorder where the sufferer stops breathing for at least 10 seconds, caused by an obstruction, such as the uvula or tongue blocking the windpipe, soft palate dropping etc.

 

OBSTRUCTIVE HYPOPNOEA:  An episode of overly shallow breathing or an abnormally low respiratory rate, which is different from an apnoea as there does remain some flow of air.   It is also caused by the same obstructions as OSA.

 

OXYGEN SATURATION:  Oxygen saturation refers to the percentage of oxygen found in the  blood.  Normal values range between 90-100%.



 

PAP:  CPAP, APAP, BiPAP etc.

 

PERIODIC LIMB MOVEMENT DISORDER (PMLD):  A sleep disorder where the sufferer involuntarily moves their limbs during sleep.

 

PSG:   Polysomnography or the Sleep Study

 

PULSE OXIMETER:  Medical device which monitors the oxygen saturation and heart rate of the wearer.  

 

RAINOUT:  Term used to describe a build-up of condensation/water in the CPAP hose tube from the humidification.  (A hose cover normally fixes this!).


RESPIRATORY DISTURBANCE INDEX (RDI):  Includes all respiratory events per hour. 


REM SLEEP (RAPID EYE MOVEMENT SLEEP):  The sleep stage where there is rapid eye movement (hence it’s name), loss of body movement, more brain activity and where dreaming occurs.


RESTLESS LEGS SYNDROME (RLS): A sleep disorder characterized by a tingling, aching, crawling and itching of the limbs which can last for hours and usually gets worse at night, preventing the sufferer from getting the sleep they need. There is an almost irresistible urge to move the legs to ease the discomfort. 

 

RPSGT:  Registered Polysomnography Technologist or Sleep Tech for short.


SEPTOPLASTY:  Surgery to straighten the nasal septum (dividing the nasal passage).  A deviated septum can cause nasal blockage and sinus problems.


SLEEP APNOEA:  Cessation of breathing for 10 or more seconds during sleep, and takes the form of Obstructive Sleep Apnoea, Central Sleep Apnoea or Mixed Sleep Apnoea.


SLEEP DEBT:   A build-up (often accumulated over many years) of sleep deprivation, and the body requires this to be paid back.  In the case of Sleep Apnoea, this debt does not usually start to get paid back until the sufferer is on successful treatment.


SLEEP PARALYSIS:  An experience of waking and not being able to move at all for (usually) a short period of time.  Whilst this is not harmful, it can be very distressing.


TONSILLECTOMY:  Surgical removal of the tonsils which can alleviate the symptoms of obstructive Sleep Apnoea, or in the case of children, removal can cure Sleep Apnoea until they are adults, in most cases.


TRACHEOTOMY: Surgical procedure to create an opening in the trachea (windpipe) so that one can breathe.  At present this is the only known complete cure for Sleep Apnoea.


UPPER AIRWAY RESISTANCE SYNDROME (UARS):  A sleep disorder caused by blockages to breathing from the upper airways – most often caused by nasal congestion.  It is closely related to Sleep Apnoea, and certainly mimics most of the symptoms.  Unlike Sleep Apnoea, 50% of the sufferers are female. 


UVULOPALATOPHARYNGOPLASTY (UPPP):  Surgical procedure to remove the uvula, pharyngeal arches and often partial removal of the soft to help improve the symptoms of Sleep Apnoea.


Views: 568

Add a Comment

You need to be a member of Hope2SleepGuide to add comments!

Join Hope2SleepGuide

Sleep Apnoea Forum

New to the Sleep Apnoea Forum? 

1. Stop by our Sleep Apnoea Welcome Center to introduce yourself to the SleepGuide community.
2. Start a New Topic of Conversation.
3. Post your photos - of yourself, your old CPAP machine, your new CPAP machine, your pet, something about you!

Interested in advertising, have a problem or need to contact us? Click the Report an Issue page.

 

Latest Activity

Brian Nickson is now a member of Hope2SleepGuide
Sunday
Roger Kris joined The SleepGuide Crew's group
Oct 14
Roger Kris is now a member of Hope2SleepGuide
Oct 12
Hugh Mattos replied to The SleepGuide Crew's discussion Welcome to our Forum - Feel Free to Introduce Yourself Here.
"Good evening to you all, I am a new member here, and I am very pleased to have found this forum. I have been using a CPAP machine for over four years now, and I have accepted the situation and have managed to get used to it. At the start I was very…"
Oct 5
Nick Daniel added a discussion to the group Buy-Sell-Swap
Thumbnail

DevilBiss SleepCube for sale

Selling a DevilBiss SleepCube CPAP Machine DV54UK-PThis was bought as a spare for travelling but no longer needed due to failing health issues; its in excellent condition and works exactly as it should. 200 hours usage. It has been thoroughly…See More
Oct 5
Hugh Mattos is now a member of Hope2SleepGuide
Oct 4
Mark Buckley is now a member of Hope2SleepGuide
Sep 9
AJ updated their profile
Sep 6
AJ is now a member of Hope2SleepGuide
Sep 6
Profile IconAndy Lakin-Hall, Tom Donnery, David Carrick and 1 more joined Hope2SleepGuide
Sep 4
Sherell Cunningham replied to Jason Moore's discussion Resmed S9 Autoset EPR CPAP Machine in the group Buy-Sell-Swap
"Hi there is this still available please."
Sep 4
Sherell Cunningham joined The SleepGuide Crew's group
Sep 4
Kath Hope replied to Amanda S's discussion Which is the best sleep apnoea test?
"Yes, that would be find Amanda and I know Joseph who runs the clinic and am sure he'll be very helpful too."
Sep 2
Amanda S replied to Amanda S's discussion Which is the best sleep apnoea test?
"Hi Kath, Thanks for the advice. I now have the go ahead from my husband to do another test. I think it will take too long via the doctors and would like to do a test straight away. I am thinking of going for the sleep disorder clinic as they do…"
Sep 2
Barbara lyttle is now a member of Hope2SleepGuide
Aug 26
Sue Abson added a discussion to the group Buy-Sell-Swap
Thumbnail

ResMed AirSense 10 Elite CPAP machine - almost new!

For SaleResMed AirSense 10 Elite CPAP machine, complete with carry bag, power pack, ResMed HumidAir humidifier, instruction booklets/documentation, 1 x brand new unopened hose and 1 x unopened large pack of filters.  Can also include a slightly used…See More
Aug 23
Sue Abson joined The SleepGuide Crew's group
Aug 23
Anthony Hilbert is now a member of Hope2SleepGuide
Aug 22
Kath Hope replied to Amanda S's discussion Which is the best sleep apnoea test?
"Hi Amanda You don't need to start a new discussion as we're following this one fine :)  It would be worth getting your GP to refer you to Oxford as the waiting list will no doubt be long due to this pandemic so at least he'll be…"
Aug 18
Amanda S replied to Amanda S's discussion Which is the best sleep apnoea test?
"Hi Kath, not used to the way the posting works on this forum . It feels as if I am collecting to much text. Should I start new topic? Have rung the clinic in Oxford and they said D has to be referred through the GP. I have found his Diagnosis from…"
Aug 18

© 2020   Created by The SleepGuide Crew.   Powered by

Badges  |  Report an Issue  |  Terms of Service