Suspension trauma is the shut-down of the circulatory system due to the constrictions placed on the body by the fall protection harness. There are kits that you can supplement on your climbing gear that will deploy a short set of bootstraps that tie back to the suspension D-Ring and will allow you to 'stand-up' and take some of the pressure off of your leg and waist fittings, but this is only a temporary solution to the problem.
The OSHA / HSE rescue requirements allow for self-rescue. This can be a real time saver, as getting to a rescue kit, taking it up to an attachment point above the fallen worker, and reaching or rappelling down to attach the kit, then lowering the fall victim to the ground can be very time-consuming. Here are three self-rescue solutions that are worthy of consideration:
The 3700 features quadruple-redundant braking, automatic speed-limiting technology, hands-free descent, and a speed control dial to control descent with just two fingers. Plus, the ropes can be replaced so it’s cost-effective and versatile. The unit can be reused repeatedly. More info at: www.deusrescue.com/products/devices/deus3700.aspx
Climb the plan.