- blood vessels being constrained/pressed on by the harness,
- lack of movement in leg and feet muscles aggravating the problem.
My question now is this:
- How fast will suspension trauma happen?
- How quickly does one have to react would one be confronted with such situation where a group member is suspended and cannot immediately self-rescue or be rescued?
Wikipedia mentions: "Onset of symptoms may be after just a few minutes, but usually occurs after at least 20 minutes of free hanging." 20 minutes doesn't seem a whole lot of time!
The point I'm getting at:
- How long should we wait/try rescue until we have to start using increasingly desperate measures to save the suspended persons life by getting them off the suspension?
In case this helps, let's assume the following hypothetical scenario: a party of 2 climbers on a multi-pitch climb. The weather is good and decently warm (i.e. no additional problems because of cold temperatures, winds, ...).