General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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BlackSpinner
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- Location: Edmonton Alberta
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by BlackSpinner » Sun Jan 20, 2013 12:11 pm
One thing I forgot to mention before was that she is not waking up so often at night to go to the toilet: only twice rather than 3 or 4 times. I'm guessing this suggests a deeper sleep and/or less sympathetic activity, but this isn't consistent with her ongoing daytime sleepiness (unless as someone suggested she may be paying off a sleep debt).
No it means she is having less apnea events. The effect of an event is to create stress hormones which causes urine production - you know "I was so scared I peed my pants" kind of thing. This is a good sign.
Daytime sleepiness is only one symptom and it may take weeks or months before that goes away. For some people it never does and some people never have it.
71. The lame can ride on horseback, the one-handed drive cattle. The deaf, fight and be useful. To be blind is better than to be burnt on the pyre. No one gets good from a corpse. The Havamal
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archangle
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by archangle » Mon Jan 21, 2013 2:09 am
I've seen some suggestions that CPAP might have a "mechanical" effect of a slight increase in blood pressure due to increased pressure in the lungs, but the effect is probably slight. i.e. a person without apnea might see a slight increase in BP if they were put on CPAP.
However, apnea DEFINITELY tends to increase your blood pressure. For those who have apnea, I believe the BP effect of eliminating apnea will outweigh the hypothetical BP increase from CPAP.
Also, when you have apnea, it causes a lot of changes in your body, mostly harmful. When you eliminate the apnea with CPAP, your body has to readjust a lot of things. There are a lot of feedback systems in your body. As these changes interact with your other physical conditions, you may get some unexpected changes in your body.
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-tim
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by -tim » Mon Jan 21, 2013 5:56 am
archangle wrote:I've seen some suggestions that CPAP might have a "mechanical" effect of a slight increase in blood pressure due to increased pressure in the lungs, but the effect is probably slight. i.e. a person without apnea might see a slight increase in BP if they were put on CPAP.
However, apnea DEFINITELY tends to increase your blood pressure. For those who have apnea, I believe the BP effect of eliminating apnea will outweigh the hypothetical BP increase from CPAP.
The mechanical effects are pure hydraulics. At the low end of 4 cm of H2O pressure should result in a 3 increase in blood pressure. The high end of 20 cm of CPAP should be 14 mm of hg in blood pressure.
You can use this:
http://www.easy-conversions.com/pressur ... -mmhg.html
(use 1 cm = 10 mm).
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archangle
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by archangle » Mon Jan 21, 2013 9:05 am
-tim wrote:The mechanical effects are pure hydraulics. At the low end of 4 cm of H2O pressure should result in a 3 increase in blood pressure. The high end of 20 cm of CPAP should be 14 mm of hg in blood pressure.
You can use this:
http://www.easy-conversions.com/pressur ... -mmhg.html
(use 1 cm = 10 mm).
The unit conversion is simple, but I'm not convinced that blood pressure will necessarily increase directly with air pressure in the lungs.
