Central Apneas

[RegD]

Does anyone here have central apeneas? If so, how many?

Do central apneas with out without Cheyne-Stokes mean you have heart failure?

[jnk]

Does anyone here have central apeneas? If so, how many?

Do central apneas with out without Cheyne-Stokes mean you have heart failure?

This may help:

http://www.mayoclinic.org/central-sleep-apnea/

[DreamDiver]

Does anyone here have central apeneas? If so, how many?

Do central apneas with out without Cheyne-Stokes mean you have heart failure?

It can also mean your pressure is too high - you may need re-titration. Have you lost weight?

[RegD]

Does anyone here have central apeneas? If so, how many?

Do central apneas with out without Cheyne-Stokes mean you have heart failure?

It can also mean your pressure is too high - you may need re-titration. Have you lost weight?

I have not lost weight. However, they seem clustered at the beginning of my sleep and when I wake up. I figured out why they are clustered when I wake up! It's because of my alarm. I hit the snooze button every 10 minutes for about 30-40 minutes before I actually wake up!

[dsm]

RegD

Centrals are very normal esp at sleep onset & anytime you wake of move around during the night.

Everyone has centrals & that does not mean you have heart complications BUT people with CHF (congestive heart failure) sure have a lot of centrals and for a number of reasons. Such people are usually known to their doctors (to get there they have had some kind of heart problems & thus the CAs are a result not a cause).

One test of if the centrals are benign or malicious is what your SpO2 reading was when the central was happening. If your SpO2 reading was normal then the central was benign & in other words normal sleeping. If your SpO2 dropped (greater than 4%) during the event, then it is of concern but if it did so & also dropped below 88% then it is of significant concern.

Unless you track your SpO2 readings, you won't really be confident as to what was happening but if your daytimes are good, then consider them as benign.

Good luck

DSM

[RegD]

RegD

Centrals are very normal esp at sleep onset & anytime you wake of move around during the night.

Everyone has centrals & that does not mean you have heart complications BUT people with CHF (congestive heart failure) sure have a lot of centrals and for a number of reasons. Such people are usually known to their doctors (to get there they have had some kind of heart problems & thus the CAs are a result not a cause).

One test of if the centrals is benign or malicious is what your SpO2 reading was when the central was happening. If your SpO2 reading was normal then the centrals was benign & in other words normal sleeping. If your SpO2 dropped (greater than 4%) during the event, then it is of concern but if it did so & also dropped below 88% then it is of significant concern.

Unless you track your SpO2 readings, you won't really be confident as to what was happening but if your daytimes are good, then consider them as benign.

Good luck

DSM

Wow! Thanks for the excellent explanation. I'm worried because these were my stats yesterday night:

90% Pressure: 10.0
Average CPAP Pressure: 8.0

Indices
% of Night in PB: 21.1%

CA: 4.2
OA: 1.5
H: 6.2
FL: 0.5
VS: 0.0
RE: 0.5

AHI: 11.9

% of Night in Large Leak : 1.6 % of Night



I noticed that my Centrals went up as the pressure went up. It's still worries me that the patter looks like Cheyne-Stokes Respiration.

I know if I'm woken up even slightly, I seem to have Centrals that follow. But I don't remember being woken up at that particular time.

[dsm]

I am not familiar with the layouts of those charts (what are they off?) but what that data looks like is classic PB (as the machine reports) but I can't tell the time cycles so can't say it is classic CSR (which would be occurring at around 2-min intervals per cycle). That chart has no clear time periods showing, only 'take a guess' at something between 4:45 & 5:09

The other aspect of CSR is its persistence - that chart data seems a little inconsistent perhaps because it is truncated ?.

All else aside - the Centrals are because of the waxing breathing flushing out CO2 & the body then signaling breathing to slow to allow CO2 build up again & the CAs are occurring as part of that cycle. What would be very helpful would be SpO2 data for the same period & timelines on the charts.

Good luck

DSM

[DreamDiver]

I am not familiar with the layouts of those charts (what are they off?) but what that data looks like is classic PB (as the machine reports) but I can't tell the time cycles so can't say it is classic CSR (which would be occurring at around 2-min intervals per cycle). That chart has no clear time periods showing, only 'take a guess' at something between 4:45 & 5:09

The other aspect of CSR is its persistence - that chart data seems a little inconsistent perhaps because it is truncated ?.

All else aside - the Centrals are because of the waxing breathing flushing out CO2 & the body then signaling breathing to slow to allow CO2 build up again & the CAs are occurring as part of that cycle. What would be very helpful would be SpO2 data for the same period & timelines on the charts.

Good luck

DSM

This is EP2.2. The data does look like classic PB. The epoch is six minutes long for each line. The tick marks at the bottom show the minute ticks. Two non-contiguous epochs have been pasted together with other data in a single image here: http://www.cybertel.ca/pic/ca.JPG

For PB, EP2.2 has it all over ResScan. My question is whether CA stands for 'Clear Airway' or 'Central Apnea' since the orange bar is not keyed.

Unfortunately, like the S9, the home oximetry bundle is being withheld by the industry for reasons unforthcoming.

[park_ridge_dave]

My question is whether CA stands for 'Clear Airway' or 'Central Apnea' since the orange bar is not keyed.

CA is "Clear Airway" on the PR Encore Pro 2.2. Little "RED" blocks are the infamous "Pressure Pulses".

Dave

[dsm]

RegD,

That waveform is truly interesting because to me, it is showing a undershoot overshoot of CO2 detection by the chemo-receptors in the brain in a very steady pattern & the respiratory system is lagging the PaCO2 detection thustriggers hyperventilation then hypoventilation then repeat. That pattern when persistent is classic CSR but the example shown is apparently not persistent.

I am sure Muffy and SWS would have more insights as to what might be taking place that allows this to show up the way it has then revert to a very steady regular pattern.

Something clearly triggers the under/over reaction but as shown, it isn't persistent. In heart cases the lag is typically caused by the slow arterial blood flow from the lungs to the chemo-receptors in the brain & that slowness triggers the persistent CSR cycles.

Interesting !

DSM

[-SWS]

I'm worried because these were my stats yesterday night:

90% Pressure: 10.0
Average CPAP Pressure: 8.0

Indices
% of Night in PB: 21.1%

CA: 4.2
OA: 1.5
H: 6.2
FL: 0.5
VS: 0.0
RE: 0.5

AHI: 11.9

% of Night in Large Leak : 1.6 % of Night

Not to worry unnecessarily... However, that green graph showing waxing and waning of breaths with central apneas in between those waxing/waning bursts IS periodic breathing. And that 21.1% periodic breathing rate says that you need to make an appointment with your doctor to review those graphs.

In the meantime I would ask the doctor if it's okay to run in CPAP mode (fixed pressure) or narrow the APAP pressure range down considerably. That looks to me like a CompSA tendency. And generally wide APAP ranges exacerbate CompSA.

http://www.sleepreviewmag.com/issues/ar ... -06_03.asp

http://www.chestnet.org/accp/pccu/compl ... a?page=0,3

[JohnBFisher]

Greetings! I definitely agree with -SWS here. You should schedule a doctors appointment to review the graphs. By the way, sometimes you can have periodic without cardiac problems. But it is always better to be certain.

Until you see the doctor, you might want to review Rested Gal's "Links to Central Apnea"

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