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6 votes

What does "partial pressure" mean in the setting of arterial CO₂?

You’re right that gases (including carbon dioxide) are mainly transported in solution. As you say, dissolved gasses do not exert a pressure. Your intuition about what partial pressure means in this ...
Chris's user avatar
  • 3,414
2 votes

Do oxygen and carbon dioxide move with Brownian motion? And, if so, do they get trapped by N95 masks?

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 ...
Michael Altfield's user avatar
2 votes

Is breathing into a paper bag an effective treatment for panic attacks?

Breathing into a paper bag to control hyperventilation might improve hypocarbia, but should NOT be done because of the risks of hypoxia and death. This case report shows that breathing into a paper ...
D.Tan's user avatar
  • 1,124
1 vote

What does "partial pressure" mean in the setting of arterial CO₂?

Ooh, this is an interesting question. I'll try to go over each of your questions one by one here. I believe that all the CO2 in the blood are dissolved in plasma. I think this is true because if it ...
Catachan's user avatar
  • 111
1 vote

Is it possible to survive too high CO2 by also having too high O2 concentration?

CO2 is a simple asphyxiant, which means it's only toxic when it's displacing oxygen. And since your question proposes that the O2 level is being supplemented, then if the percentage of O2 in the air ...
Carey Gregory's user avatar
  • 9,913
1 vote

Gas from cigarette smoke

The answer to your question is thirdhand smoking (THS): From the American Nonsmoker's Right Foundation (ANRF), "Thirdhand smoke consists of the tobacco residue from cigarettes, cigars, and other ...
Testerx's user avatar
  • 411

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