Questions tagged [pressure]

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1 answer
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With blast injuries, how much of the damage is from rapid decompression?

If a person suffers exposure to a high explosive or low explosive blast, how much of their injuries will be due to the sudden decompression immediately after the shockwave? Sudden decompression can ...
3 votes
0 answers
56 views

Where does the claim that 1lb of weight loss takes 4lb of pressure off your spine come from? Is it true?

If you Google "4lb spine" there are an awful lot of pages with a quote along these lines: For every four pounds you lose, you remove 16 pounds of pressure from your spine. None of them ...
1 vote
0 answers
14 views

Do tooth infections pockets build pressure?

Here is a strange situation that happened these days. I had an infection in a tooth that had a root canal and a post with a crown. The infection was there for a while and these days, the whole thing (...
2 votes
0 answers
70 views

Is skydiving from 4km dangerous for people who suffer from ear pain in planes?

Sometimes, specially if I have nasal congestion, because of a cold or hayfever, I have ear pain when landing. I also had problems with equalizing the one time I did scuba diving, last year. Some ...
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1 vote
0 answers
37 views

Performing Valsalva maneuver with partly open airway?

The Valsalva maneuver is defined as "attempted exhalation against a closed airway" or "The effort to breathe out forcibly while the mouth and nose are firmly closed or the vocal cords pressed together"...
  • 305
1 vote
1 answer
612 views

Tourniquet application on a venous bleed

A few weeks ago in class (EMT), we were discussing tourniquet application in instances where there is bleeding that couldn't be controlled by pressure. In most cases, a tourniquet will be used on a ...
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