As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced. At 12,000 feet (3,658 meters) the barometric pressure is only 483 mmHg, so there are ...
It can take up to 15 minutes for the stress hormone cortisol to pass out of your system before you have a clear head again. Breathe deeply. Or go for a walk. Getting oxygen helps to clear the cortisol ...
Saturation diver Chris Lemons miraculously survived for over 30 minutes while 100m underwater in the North Sea without an oxygen supply in September 2012.
The child could stop breathing on the way and they will get care more quickly if you call an ambulance. If your child has no history of wheezing, seek medical attention right away. Wheezing is not ...