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: 483

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

Maxine Chaplain left a comment for Karen Hamer
"Thank you Karen. Your suggestions are good and I will certainly give them a go. To be honest, I feel so good about life after years of fatigue that this just a minor problem. I'm sure I will crack it! I'm definitely going to try a silk…"
9 hours ago
Kath Hope replied to The SleepGuide Crew's discussion Welcome to our Forum - Feel Free to Introduce Yourself Here.
"You could try that Maxine, but just a piece of material under the straps would at least let you know if it's the straps themselves causing the issue.  The softcap I mentioned is for using without the mask's headgear.  Good luck!…"
yesterday
Karen Hamer left a comment for Maxine Chaplain
"Hi Maxine - I also suffered similar problems,  and early on started to use a hair net. Not the sexiest of looks but it helps! You can buy sleep hair nets from High St chemists.. I also have a silk hair cap and a light jersey cap which I got off…"
yesterday
Maxine Chaplain replied to The SleepGuide Crew's discussion Welcome to our Forum - Feel Free to Introduce Yourself Here.
"Thank you for the reply, Kath. I had thought about making myself a cotton cap but have been putting it off thinking that I just don't need something else on my head during the night! I will give it a go and let you know. "
yesterday
Kath Hope replied to The SleepGuide Crew's discussion Welcome to our Forum - Feel Free to Introduce Yourself Here.
"Welcome Maxine and good you got diagnosed with such a severe case.  I wonder if the itchy scalp is due to the nights being hotter at the moment or if you've washed the straps with something that's causing an allergy.  If you…"
yesterday
Maxine Chaplain replied to The SleepGuide Crew's discussion Welcome to our Forum - Feel Free to Introduce Yourself Here.
"Hi everyone! I'm new to this forum and new to Sleep Apnoea. I was diagnosed a few weeks ago having 50+ events per night. I'm doing well with my Resmed machine and mask, however I wonder if anyone else suffers from an itchy scalp where the…"
Monday
Eric Swindon posted a discussion

O.S.A. & B.H.P

Obviously I am an elderly male with enlarged prostate and have been on cpap for the last 13 years. My urologist has prescribed TAMUREX (Tamsulosin Hydrochloride) so I researched it and found this review "I'm a 58 years old. I used to get up 4 or 5…See More
Sunday
James Kilby replied to James Kilby's discussion Resmed airsence 10 - carry case - full face mask
"Could take £300 as of on holiday next week"
Jul 7
simon howlett posted a discussion

For Sale - Brand new S9 autoset heated H5i humidifier

brand new un-opened and surplus to requirements this is a brand new H5i humidifier water tank and heated attachment compartment, with a climate air tube, also not usedwould be ideal to replace older parts or keep as spares for your machine selling…See More
Jul 6
James Kilby replied to James Kilby's discussion Resmed airsence 10 - carry case - full face mask
"Located leicester"
Jul 5
Graham Carr replied to James Kilby's discussion Resmed airsence 10 - carry case - full face mask
"Hi, thanks for replying. I'm still interested in the Resmed unit. Where are you located?"
Jul 5
James Kilby replied to James Kilby's discussion Resmed airsence 10 - carry case - full face mask
"Still available Having trouble loading images this is the model and same face mask http://store.mainclinicsupply.com/resmed-cpap-airsense-10-p/airsense-10.htm#&panel1-6"
Jul 5
Maxine Chaplain is now a member of Hope2SleepGuide
Jul 1
Chris Vesey replied to Hazel Hall's discussion Mask
"Hi, My machine and mask is made by resumed, they recommend replacing the mask at 12 months. My stuff was supplied by queen's hospital, Burton upon trent but when I need anything replacing I just phone resumed and they send it and bill the…"
Jul 1
Hazel Hall posted discussions
Jun 30
Nigel Scott is now a member of Hope2SleepGuide
Jun 20
Graham Carr replied to James Kilby's discussion Resmed airsence 10 - carry case - full face mask
"Hi James, I'm interested in getting a CPAP to see if it helps my sleep apnea. How much use has the CPAP had? Do you have any photos? Thanks"
Jun 19
Graham Carr is now a member of Hope2SleepGuide
Jun 19
James Kilby posted a discussion

Resmed airflow 10 - carry case - full face mask

Hello  I have a Resmed 10 automatic with full face mask and carry case. Nearly new £350See More
Jun 13
Profile IconJames Kilby, Sonia Baker, Anton and 1 more joined Hope2SleepGuide
Jun 13

© 2019   Created by The SleepGuide Crew.   Powered by

Badges  |  Report an Issue  |  Terms of Service