I am having my sleep study re-done next week because I did not sleep well at all during my first study-which was a split night study, by the way. I will now have a 2 night study done so there is more time to see my sleeping patterns/problems etc. My question is..... I really want them to see how I sleep through the whole night, if I am having a lot of events will they have no choice but to put cpap on me??? Are there certain criteria for that-i.e. oxygen destats or events per hour???
Sleep study criteria
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The most important thing about your PSG is getting to sleep and reaching REM.
REM is where the worst SDB (sleep disorder breathing) are seen . This includes arousals caused by other factors such as pain.
Typically what happens is you go to the sleep study and they devote the first half or 240 minutes of study to the diagnostic portion of the test. If the first part of the study determines you have OSA they will attempt cpap therapy on you to see how you respond to treatment. So if they wake you and have you put on a mask, do not fight it, try and put the mask on and fall back asleep, it is important that you fall back asleep and reach REM so they can find the correct pressure.
They didn't do this with me, but if you can ask the tech to try on a mask BEFORE the study, get the straps all adjusted so if they do want to titrate you, you are not awaken to a state where you can't fall back asleep (test fails if you cannot get back to sleep).
For my titration, I took 2ea TylenolPM's in the parking lot of the sleep lab because I took TylenolPM in my regular routine. I mainly use Melatonin.
Try and follow your normal routine for sleep if at all possible.
Criteria? Should follow along the lines below:
DEFINITIONS:
APNEA = cessation of airflow for 10 seconds or greater.
HYPOPNEA =>50% decrease in airflow for 10 seconds or greater with a decrease in oxygen saturation of >3%.
APNEA/HYPOPNEA INDEX (AHI) = apnea plus (+) HYPOPNEA/hour of sleep.
RESPIRATORY AROUSAL INDEX (RAI) = AHI +snoring related EEG arousals/hour of sleep.
AHI/RAI** Scale =<5 events /hour = (none); 5-15 events/hour = (mild); 15-30 events/hour = (moderate); >30 events/hour = (severe).
Respiratory related sleep fragmentation: Sleep arousals due to respiratory events or snoring.
Desaturation = Drop in O2 oximetry distribution saturation by 3% below average saturation.
SaO2 scale: >89%=(none); 85-89%=(mild);80-84%=(moderate); <80% (severe).
EPWORTH SLEEPINESS SCALE =<10=(does not indicate EDS (Excessive Daytime Somnolence));10-15=(indicates daytime somnolence-not excessive);>16 (indicates EDS).
RESPIRATORY EFFORT RELATED AROUSALS (RERAs)=Sleep Arousals due to respiratory events characterized by pressure flow limitations in the airflow indicator channel without significant O2 desaturations.
StageIII and StageIV are combined and referred to as Deep Sleep.
Sleep Efficiency = Normal is >80%
REM is where the worst SDB (sleep disorder breathing) are seen . This includes arousals caused by other factors such as pain.
Typically what happens is you go to the sleep study and they devote the first half or 240 minutes of study to the diagnostic portion of the test. If the first part of the study determines you have OSA they will attempt cpap therapy on you to see how you respond to treatment. So if they wake you and have you put on a mask, do not fight it, try and put the mask on and fall back asleep, it is important that you fall back asleep and reach REM so they can find the correct pressure.
They didn't do this with me, but if you can ask the tech to try on a mask BEFORE the study, get the straps all adjusted so if they do want to titrate you, you are not awaken to a state where you can't fall back asleep (test fails if you cannot get back to sleep).
For my titration, I took 2ea TylenolPM's in the parking lot of the sleep lab because I took TylenolPM in my regular routine. I mainly use Melatonin.
Try and follow your normal routine for sleep if at all possible.
Criteria? Should follow along the lines below:
DEFINITIONS:
APNEA = cessation of airflow for 10 seconds or greater.
HYPOPNEA =>50% decrease in airflow for 10 seconds or greater with a decrease in oxygen saturation of >3%.
APNEA/HYPOPNEA INDEX (AHI) = apnea plus (+) HYPOPNEA/hour of sleep.
RESPIRATORY AROUSAL INDEX (RAI) = AHI +snoring related EEG arousals/hour of sleep.
AHI/RAI** Scale =<5 events /hour = (none); 5-15 events/hour = (mild); 15-30 events/hour = (moderate); >30 events/hour = (severe).
Respiratory related sleep fragmentation: Sleep arousals due to respiratory events or snoring.
Desaturation = Drop in O2 oximetry distribution saturation by 3% below average saturation.
SaO2 scale: >89%=(none); 85-89%=(mild);80-84%=(moderate); <80% (severe).
EPWORTH SLEEPINESS SCALE =<10=(does not indicate EDS (Excessive Daytime Somnolence));10-15=(indicates daytime somnolence-not excessive);>16 (indicates EDS).
RESPIRATORY EFFORT RELATED AROUSALS (RERAs)=Sleep Arousals due to respiratory events characterized by pressure flow limitations in the airflow indicator channel without significant O2 desaturations.
StageIII and StageIV are combined and referred to as Deep Sleep.
Sleep Efficiency = Normal is >80%
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• Page 1 of 1