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9

Medical oxygen in liquid or compressed cylinders is typically >99% O2, but it is not typically administered at full strength. Instead, patients inspire a mixture of O2 and room air. Oxygen concentrator units concentrate to 90-96%, which is called "93% oxygen". The remainder is mostly nitrogen.


7

A large study of ~8000 patients suggests there is no real benefit to prophylactic oxygen supplementation after acute stroke (Roffe et al., 2017). American Heart Association/American Stroke Association guidelines (Powers et al., 2018) are for oxygen only for hypoxic patients, with limited evidence of benefit but no evidence of harm. Hyperbaric oxygen is only ...


4

The software is very different. And the capabilities of the machine. The monitoring parameters within Ventilators are much more sensitive to pressure and volume than CPAP or BIPAP machines. Below are two pages from the manufacturer with setting capabilities for a BIPAP and a ventilator. https://www.usa.philips.com/c-p/HH1460_00/dreamstation-cpap-with-...


2

The American Academy of Sleep Medicine (AASM) is correct in what they are saying when they said that It is possible that using CPAP could increase the risk of spreading the virus to others around you. If you are suffering from COVID-19 and use a CPAP machine, the air around you is sucked into the machine and blown out of the mask. Excess air pressure is ...


2

The essence of protection is a physical barrier against air borne virus droplets splashing against your mucus membranes (eyes, nose, mouth), and against virus from being breathed in. A CPAP machine offers none of these. Even if connected to an oxygen supply some CPAP machines are just nasal and don't stop the person using their mouths. The oxygen supply ...


2

Hyperoxygenation causes vasoconstriction and increased systemic vascular resistance. This can be good in some circumstances and bad in others. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3672526/ Overall there is poor evidence for supplimental oxygen in patients with pneumonia. Cochrane found that: "Non-invasive ventilation can reduce the risk of death in ...


2

While hyperbaric oxygen therapy does have many benefits, there are potential issues. According to John Hopkins University Hyperbaric oxygen therapy can lead to lung damage, fluid buildup in the ears and vision changes. While these are not common, they can occur from the high pressure that the body is experiencing. A healthy person without indications for its ...


1

From what I can tell, yes, both oxygen and carbon dioxide gas particles will follow brownian dynamics as they move through the air on both sides of an N95 mask. And, yes, studies (on people wearing N95 masks, not on the mask itself--which more directly answers the concern) have shown that carbon dioxide does get trapped in the mask and builds-up over time. (...


1

There is no evidence: "Despite a potential bit of miscommunication about the technique's effect on insomnia, there’s one thing I can be certain about – there doesn’t appear to be any reliable evidence that the 4-7-8 breathing method works."


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