Yes, @A MyCOPDTeam Member, according to the better breathers club I attended. Per their teachings, you are set a specific setting (I’m on two (2) liters per minute) and you run the risk of “hardening” your lungs if you mess with your settings.

REF: https://myhealth.ucsd.edu/RelatedItems/3,90904#....

Generally, the setting is increased or decreased based on your oxygen saturation rates when they are establishing your initial use and monitoring needs over time. If you need to change your settings due to exertion, as an example, your pulmonologist or respiratory therapist will work with you to set parameters if you’re having varying oxygen needs at different times.

Some folks need higher supplemental oxygen use than others, but that depends on a number of factors. Please verify the measurements of your supplemental oxygen concentrator equipment as they can deliver as low as 85% supplemental oxygen, or as high as 95% supplemental oxygen. Your equipment should be FDA approved, and you should have an oxygen meter to test your oxygen purity level when cleaning your equipment and/or changing filters.

https://my.clevelandclinic.org/health/treatment...

I hope this answer helped. Happy Saturday night, 23-SEP-23

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A MyCOPDT...

This is one of those things where the dust hasn't settled yet and it's been discussed in various forms for at least 20 years that I've been following it. The RTs I know who are experts in their field and the few docs I know who really understand 02 and especially home delivery of 02, all agree that prescribing by liter flow is probably not the best way to prescribe Telling patients to stick to a specific liter flow is a really good way for patients to develop right heart failure and/or brain damage. The problem is that if the liter flow for sitting and watching TV is 2 LPM, every time that patient gets up to go to the bathroom or to the kitchen, their O2 saturation levels drop and probably drop below 88, where damage begins.

The docs I'm talking about prefer instead to prescribe an oximeter (02 saturation level ) reading for their patients. Mine is 92 to 99, depending on what I'm doing and my doc expects me to titrate my 02 based on my oximeter readings for various activities. The late Dr. Brian Tiep, one of my favorite pulmonologists, and Dr. Tom Petty, considered by all to be the father of home use 02, always talked about "titrating as you migrate" meaning adjusting your liter flow based on oximeter readings. It's served me well over many years.

@A MyCOPDTeam Member Their is Hypoxia on both ends, Too much and Not enough. Not enough and too much is harmful to healthy people. Most think More is better. I sleep with o2 and have my concentrator set at 1 liter. When I exercise I set it at 2 1/2 liters. When I walk the dog in the morning, I carry my D tank set at 1 liter to keep my o2 at around 93+. I do Not use o2 during the day at all and my o2 stays around 94 and up. Different Situations call for You're knowledge of what the body is doing, is what is most important. I sometimes drop to 88 while doing something, But I know my stats will go back up within a minute so I don't sweat it much, Anything 90 and over is safe. If you take away the Body's need to produce o2 the normal way by using more o2, The body will rely more and more on Supplimental o2. JMO...

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A MyCOPDT...

Thanks again for all your support 🙏 ❤️

Harmful if you dont take it.