Is DCS possible under 20fsw, or 100% impossible?

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We just finished a mammoth thread nearly the same topic. It finally came to an end with research on shallow saturation divers. It was found that shallower then 20 feet, a saturated diver could go directly to the surface. Deeper than 20 feet, the potential for DCS started to rise sharply. That means that, yes, you can dive shallower than 20 feet for as long as you wish.
Scubaboard is a wealth of knowledge.
 
DCS - Decompression Sickness. Does this include burst lung (as it was in old money), or are we just talking about 'bends'?

Rapidly bolting to the surface from 20'/6m is pretty dangerous even though the likelihood of a "bend" through absorbed gases coming out of solution is highly unlikely (if within no-deco limits).
 
DCS - Decompression Sickness. Does this include burst lung (as it was in old money), or are we just talking about 'bends'?

Rapidly bolting to the surface from 20'/6m is pretty dangerous even though the likelihood of a "bend" through absorbed gases coming out of solution is highly unlikely (if within no-deco limits).
What are these "freedom units"?
 
DCS - Decompression Sickness. Does this include burst lung (as it was in old money), or are we just talking about 'bends'?
In normal scuba-speak:

DCS (the topic of this thread) refers specifically to decompression sickness and is commonly called the bends.
DCI (not the topic of this thread) refers to Decompression illness, and is used to refer to both DCS and lung barotrauma, primarily because of the problem of distinguishing the symptoms of the two.
 
In normal scuba-speak:

DCS (the topic of this thread) refers specifically to decompression sickness and is commonly called the bends.
DCI (not the topic of this thread) refers to Decompression illness, and is used to refer to both DCS and lung barotrauma, primarily because of the problem of distinguishing the symptoms of the two.
Good response!
 
In normal scuba-speak:

DCS (the topic of this thread) refers specifically to decompression sickness and is commonly called the bends.
DCI (not the topic of this thread) refers to Decompression illness, and is used to refer to both DCS and lung barotrauma, primarily because of the problem of distinguishing the symptoms of the two.
Exactly :)

Decompression illness (DCI) = Decompression sickness (DCS) + Arterial gas embolism (AGE)

Decompression illness results from a reduction in the ambient pressure surrounding a person’s body. It is commonly caused by pressure changes that occur in scuba diving, a very popular sport in many parts of the world. Decompression illness includes two conditions: decompression sickness and arterial gas embolism. Decompression sickness is thought to result from bubbles growing in the tissue and causing local damage. Arterial gas embolism results from bubbles entering the circulation, collecting together and travelling through the arteries and causing tissue damage by blocking blood flow to the small vessels.
 
As long as we are on the topic....

This is the key idea of the safety stop. It is safe for any saturated tissue to go to the surface from that depth. As diver ascends from greater depth, the tissues that have greater pressure than that are supersaturated and are losing nitrogen as they ascend. During a safety stop, any tissue that is too saturated to go to the surface should quickly drop to the safe pressure at that depth. Some slower tissues are still on-gassing nitrogen, but they cannot go beyond saturation at that depth, so they will always be safe to surface.
 
Exactly :)

Decompression illness (DCI) = Decompression sickness (DCS) + Arterial gas embolism (AGE)

...
Arterial gas embolism results from bubbles entering the circulation, collecting together and travelling through the arteries and causing tissue damage by blocking blood flow to the small vessels.
Of course, lung barotrauma can cause other injuries, including pneumothorax, mediastinal emphysema, and subcutaneous emphysema.
 

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