Decompression Sickness facts

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Noise pollution is deadly to whales: sonar can directly inflict fatal physical trauma and decompression sickness (akin to "the bends"). Individuals—sometimes entire pods—will beach themselves to escape, whereupon they will choke to death under their own weight or drown at high tide.

how decompression sickness occurs?

Safety risks during scuba diving include decompression sickness. When decompression sickness occurs, as a result of a build-up of gases in the bloodstream and the pressure is reduced too quickly. Avoiding decompression sickness is achieved by ensuring the ascent is not done too quickly. If decompression sickness occurs and first aid is not successful, there is serious risk of death or permanent disability.

What causes decompression sickness?

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what's decompression sickness?

1. That, to avoid decompression sickness, astronauts "camp out", a procedure which involves sleeping in the airlock at a pressure of 0.7 bar the night before a spacewalk. This purges nitrogen out of the bloodstream, suiting the astronauts for the pure-oxygen atmosphere (0.34 bar) of the spacesuit.

2. John Stapp - An Air Force Officer, flight surgeon, physician, biophysicist, and pioneer who developed oxygen systems to prevent decompression sickness, studied the effects of deceleration by hitting 46.2Gs on a rocket sled traveling 632mph, and popped off his jet canopy at 570mph

3. Breathing a liquid (perfluorocarbon) while diving could eliminate decompression sickness. "Liquid breathing would not result in the saturation of body tissues with high pressure nitrogen or helium , thus would reduce or remove the need for slow decompression."

4. Free-divers don't typically get decompression sickness (DCS) unless they are doing successive deep dives with short intervals at the surface.

5. Although in the 1870s decompression sickness (called Caisson disease at the time) was suspected by physicians to be caused by a buildup of inert gasses in blood when exposed to air at high ambient pressure, laborers were largely treated with mandatory rest and copious amounts of beef tea.

6. Some commercial divers live in pressurized environments for long periods of time to avoid decompression sickness.

7. Brooklyn Bridge designer John Augustus Roebling died before the construction started. His son Washington Roebling was then left in charge until decompression sickness rendered him unable to visit the site, yet he continued to oversee the Brooklyn project to successful completion in 1883.