(08-15-2014 09:31 PM)ctolstad Wrote: Do I obtain all this info off a printout from from doctor when he runs the card???? To provide you with info u need to help me??????
Hi ctolstad, welcome to the forum!
I don't have experience with Respironics machines, so I can't help with how to get data from your machine.
It would be helpful for you to tell us the exact model number of your machine.
In the "Important Threads" section at the top of the forum, there are threads to help you identify your machine and to download or request by email the clinician setup manual for your machine.
The clinician setup manual/guide is your partner/friend in finding out how your machine works and what the various settings are, so you can be more knowledgable about your machine's capabilities and how the various settings affect your therapy, so your doctor will be able to discuss your therapy with you in greater detail.
In particular, I am wondering what are your pressure settings. These will include:
Therapy Mode (fixed pressure CPAP mode, or ASV mode, or whatever)
Min EPAP (which is the minimum pressure delivered during exhalation)
Max EPAP (which is the maximum pressure delivered during exhalation)
(Note that your machine will automatically adjust the pressure it delivers while you are exhaling to be somewhere between Min EPAP and Max EPAP, at the level needed to avoid obstructive events like obstructive apneas, hypopneas, airflow limitations and snoring.)
Min Pressure Support (Min PS)
(Note that PS is the amount of pressure boost added while you are inhaling. For example, if EPAP is 5 and PS is 3 then the pressure delivered while you are inhaling, which is called the IPAP, will be 5 + 3 = 8.)
Max Pressure Support (Max PS)
Max Pressure or perhaps called Max IPAP
(IPAP is the pressure delivered during inhalation.)
The way your machine treats obstructive events is to raise the EPAP pressure.
The IPAP pressure is always the EPAP pressure plus Pressure Support.
The way your machine treats central apneas (which is when your airway is clear but you are not breathing, so your central nervous system is failing to try to breathe) is to quickly increase Pressure Support as high as it needs to be to keep you ventilated at least 90% of your recent amount of breathing (to keep the average volume of air inhaled or exhaled per minute, which is called the Minute Ventillation or Minute Vent, at a target value which is 90% of its recent average value just before you stopped breathing).
For example, if your EPAP is 5 and PS rapidly increases to 10 then the pressure would periodically alternate between 5 and 15. The period if the oscillation is called the backup respiration rate, and can be set to a fixed value (such as 10 or 12 breaths per minute) or perhaps can be set to automatic (which will be whatever your recent normal breath rate has been).
When Pressure Support is around 10 or higher the machine will be doing all the work of breathing for you. And when you eventually start to exert effort to breath on your own the machine will rapidly reduce PS back to a lower level now that less Pressure Support is needed.
By looking at the plots of the data your machine reports, you will be able to see if the Max EPAP is appropriate or is keeping the EPAP pressure too low. And you will be able to see if either the Max PS or the Max Pressure (Max IPAP) settings are keeping the PS from being able to increase as much as needed to keep you adequately ventilated during apnea or hypopnea events.