If I were you I would ask your specialist if I need to breath more or less air. It does not change the ammount of air you need to breath to remove CO2 from your body. The use of O2 would tend to reduce the ammount of air that you need to breath to meet your oxygen needs.
#Tidal volume calculator plus
I tend to have the other problem (Hypocapnea - too little CO2 in the blood) likely due to the fact that I grew up in thin air (about a mile high) and so have more than average active lung space plus the fact that traumatic stress in my life tends high respiratory gain and levels (I tend to breath too much air). Hypercapnia (too much CO2 in the blood) means that not enough air moved in enough of the active lung space to remove the CO2 in the blood. I see my pulm this week so I am trying to get all my ducks in a row and know what to talk to him about.
Or because I am still desaturating my gases could be out of whack? Stupid question, can you still get hypercapnic if you are on 3L of oxygen? I was under the impression the oxygen helped my blood gases. I think the question for the doctor is "am I often hypercapnic"? I think your numbers are lower than average. How much air you actually need depends upon your body and it's metabolism at the time. Some of the measurements of some 60 years ago found average people breathing 3 liters per minute.īut today and average person uses about 6 liters per minute.Īverage weight was about 170 pounds for a male but now runs about 195. What is happening with your Minute Volumes? Nmbugs wrote:I was reading through this thread viewtopic.php?f=1&t=34491&st=0&sk=t&sd=a&start=30 and it seems my tidal volumes are too low. Perhaps that is when I have very shallow breathing which wouldn't trigger an apnea event but would surely show my TVs low, right? Did I just answer my own question, or is this logic flawed?
#Tidal volume calculator tv
I am assuming the TV if it isn't affected by my apneas then these are the times I would most likely be desaturating? I know desaturation happens during apnea events too but mine during the sleep study happened during non-apnea events. I have an okay understanding of peak flow (having asthma since I was 18) and now undergone several PFTs. Anyways I am not worried or panicked over the numbers just curious. My doctors are mainly grumbling and keeping me in the dark, waiting and wanting to see what NJ will do. Okay so FINALLY my question is what do these numbers mean? Since I am having fewer apneas I thought my TVs would have gone up but they haven't.
#Tidal volume calculator software
Right now I can only track my night time desaturations when I can get the unit from my DME supplier which isn't that often but they use their own software (which didn't give times I desaturated just the lowest to highest and percentage of time spent in those periods) so I couldn't enter the data into my cpap software. My new pulse oxy should be here any day and it will be able to stay on all night and record all data (which sleepyhead will be able to read too). Now I know this data has its limits when it comes to accuracy but it at least it gives us something to go on. When looking at the chart on sleepyhead it looks like when I go into the 60s I stay there for some time and it comes in big chunks throughout the night (usually in the early morning from 2am-6).The max TV often corresponds when I have my leaks (aka lift my mask to scratch my nose, which always seems to itch once the cpap mask goes on ). However mine are as follows: Min 60 Med 340 95% 480 Max 740. Wow what a change, my AHIs dropped to under 4AHIs every night!! Still desaturating but I have to look at the positives whenever I can.Īccording to the above linked thread my tidal volume (weight x5 then weight x7) should be 585 and 819. After being on the autoset for 45 days my AHIs were still pretty hig, running between 10-13AHI and still desaturating even with oxygen so my doctor suggested I stop my sleeping medicine. I am on oxygen 24/7 along with Resmed S9 autoset, pressures 6-13. I was reading through this thread viewtopic.php?f=1&t=34491&st=0&sk=t&sd=a&start=30 and it seems my tidal volumes are too low.īackground first: I am in the process of going to National Jewish (go in May) for suspected pulmonary arterial hypertension.
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