I can see Im having events, sleepyhead and machine cant?

[Masta]

New to cpap, Ive been on cpap therapy for 16 days. It seems every night I have events, but my machine and sleepyhead dont seem to think Im having any My DME called me, to check in with how I was doing. I told them I've downloaded sleepyhead and its showing approx 10 sec or less of flat-lines, yet sleepyhead and my machine both say my AHI is 0.00 every night. My machine has said I have had 0.00 events since the first day Ive used it.

I have also explained to my DME that I am having a hard time breathing when I put my mask on before bed. If I use the bathroom, then hop into bed, I have to wait a few minutes to calm my breathing down before I can put on my mask, it feels like if I put my mask on right away, I cant get enough air to breathe. So the DME is having a Respiratory Therapist call me back.

Aug 3rd



Aug 4


Aug 17

[LSAT]

IT might be a faulty machine, but, just to check....pull the plug on the unit...wait 30 seconds and then plug it in. Often re-booting (just like your computer) will straighten things out. Try another night and see what happens. You might also slowly increase your minimum pressure to about 8....4 is very hard to breath.

[Pugsy]

Also remember that to earn a flag there is certain criteria that must be met.
All must be at least 10 seconds in duration and meet a certain level of air flow reduction depending on which event flag. If it doesn't last at least 10 seconds...no matter if 0 air flow it won't get a flag of any kind.
9.9 seconds of total flat line 0 flow...won't earn a flag from your machine.
They have to have a line somewhere and that's where the line is.

[BleepingBeauty]

The screenshot indicates that your machine is set with pressures from 4-16, but your pressure graph looks like you're on a straight cpap pressure of about 5.5 on two of those nights (and August 4 indicates pressure somewhere around 11). I'd do the reset procedure (unplug, wait, plug back in) and try again; if it doesn't straighten things out, I'd say your machine is faulty.

[Jay Aitchsee]

approx 10 sec or less of flat-lines

I think Pugsy got it. I don't see any events (in what you posted) that equal or exceed 10 sec.

[palerider]

showing approx 10 sec or less of flat-lines, yet sleepyhead and my machine both say my AHI is 0.00 every night. My machine has said I have had 0.00 events since the first day Ive used it.

another voice to the "events don't count unless they're over 10 seconds in length" chorus.

not happy with success?

[Masta]

Thank you for your responses. I have pulled the plug on my machine for 30 seconds to reset it. You are right, the pictures in my previous post (and after careful review of every night) my "events" are less than 10 seconds. I found this pic to be the closest to being 10 sec, it started around the 01:05:06, then I seemed to have 2 small dips, then a larger dip (dont know what they are) before what seems like I took a breath around the 01:05:16 mark.



How are hypopneas scored on the machine and sleepyhead? Im being supervised by the DME and my Sleep doctor, am I allowed to change the minimum pressure so the machine doesnt start off at the "4" setting which I find is difficult to breath.

The pic below, it shows I go from the pressure setting of "4" up to setting "14.66" (some nights its been up to the max of "16"). When I go in to see the doctor to look over my first 6 weeks of cpap machine usage, will he change the settings based on what he sees? Or will the Cpap machine suggest a pressure setting based on my usage?

[Pugsy]

SleepyHead doesn't do any "interpreting" of the data itself. All the software does it report the data that the machine gathers/stores and writes to the SD card. It's the machine that is doing all the deciding on what to call something.

ResMed has specific definitions for each event category.
We took the definitions for this glossary from the manuals both Respironics and ResMed
http://sleepyhead.sourceforge.net/wiki/ ... p/Glossary

Hypopnea

An hypopnea is indicated if there is approximately 40% reduction in airflow for a duration of between 10 and 60 seconds, compared to the average airflow over an extended period of several minutes. Following a reduction in airflow, the therapy device must see two recovery breaths in order to label the event as a potential hypopnea. (Respironics detection is 40% reduction and ResMed detection is 50% reduction)

Apnea

An apnea is indicated if there is an 80%/75% (Respironics/ResMed) reduction in airflow for 10 seconds compared to the average airflow over an extended period of several minutes or if there is no airflow detected for 10 seconds.

Apnea/Clear Airway Apnea Detection the the Respironics System One.. An apnea is detected when there is an 80% reduction in airflow from a baseline for at least 10 seconds if there is no airflow detected for 10 seconds. During the apnea, one or more pressure test pulses are delivered by the device. The device evaluates the response of the patient to the test pulse(s) and assesses whether the apnea has occurred while the patient has a clear airway or an obstructed airway. The airway is determined to be clear if the pressure test pulse generates a significant amount of flow; otherwise the airway is determined to be obstructed.

Apnea Detection guidelines per ResMed machines..Apnea...When the respiratory flow decreases by more than 75% for at least 10 seconds.

[Julie]

Almost all of us move the pressure setting (the machine's default low) of 4 to a higher one - it's highly unlikely to be anyone's prescribed number.

[ChicagoGranny]

I am having a hard time breathing when I put my mask on before bed.

Any pressure below 7 and I feel like I am suffocating. Turn your min pressure to seven.

https://www.youtube.com/watch?v=SlS5MxuianA