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<p><b>New page</b></p><div>'''Isobaric counterdiffusion''' ('''ICD''') is a phenomenon that occurs in [[scuba diving|diving]] and [[space travel]], where different [[gas|gases]] diffuse in opposite directions during changes in ambient pressure. This can lead to the formation of gas bubbles in the body, which can cause serious health problems such as [[decompression sickness]] and [[arterial gas embolism]].<br />
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==Overview==<br />
[[Isobaric counterdiffusion]] involves two different types of gas diffusion: super-saturation and gas counterdiffusion. Super-saturation occurs when the body's tissues are saturated with a certain gas, and the pressure of that gas in the body is greater than the pressure of the gas in the surrounding environment. Gas counterdiffusion occurs when two different gases diffuse in opposite directions in the body.<br />
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==Mechanism==<br />
The mechanism of [[isobaric counterdiffusion]] involves the diffusion of gases in the body during changes in ambient pressure. When a diver ascends or descends, the pressure of the gases in the diver's body changes. If the diver is breathing a gas mixture that contains a high concentration of a certain gas, that gas will diffuse into the body's tissues. If the diver then switches to a gas mixture that contains a lower concentration of that gas, the gas will diffuse out of the tissues and into the bloodstream. This can lead to the formation of gas bubbles in the body.<br />
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==Health Risks==<br />
The health risks associated with [[isobaric counterdiffusion]] include [[decompression sickness]] and [[arterial gas embolism]]. Decompression sickness, also known as the bends, occurs when gas bubbles form in the body's tissues and cause pain, paralysis, or death. Arterial gas embolism occurs when gas bubbles enter the bloodstream and block blood flow to vital organs.<br />
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==Prevention==<br />
Prevention of [[isobaric counterdiffusion]] involves careful planning of diving and space travel activities. Divers and astronauts should avoid rapid changes in ambient pressure and should breathe gas mixtures that are appropriate for their depth or altitude. They should also undergo decompression stops to allow gases to diffuse out of their bodies slowly.<br />
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==See Also==<br />
* [[Decompression (diving)]]<br />
* [[Gas embolism]]<br />
* [[Henry's law]]<br />
* [[Partial pressure]]<br />
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[[Category:Scuba diving]]<br />
[[Category:Space medicine]]<br />
[[Category:Gas dynamics]]<br />
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