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Great response fhfr436. Great response.
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Thanks, it all seems second nature and obvious to me, but I've been a licensed, practicing EMT for about 7-years now.
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not all bucket trucks have ground controls, do they?
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I wouldn't be surprised to find that some older ones do not. I have limited experience with bucket trucks, but have used many different hydraulic manlifts for many years. In the event of system failure, these often only have hydraulic valves that can be opened at the ground level to release the various degrees of freedom (telescope, lift, rotate basket). I've often gotten myself in a position, however, where just releasing the pressure would not be enough because the basket has been threaded up into the structure. Obviously this could easily happen in a tree too. In that event, the preferrable system is going to be the type Genie manlifts have: battery power can be used for emergency operation of all controls if the main power source for the hydraulic system fails. That includes going up/extending as well as down/retracting.
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not all bucket trucks have ground controls, do they?
Then what?
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You must have access to the patient to effect any type of lifesaving care. Any significant patient care (to an unresponsive patient) will involve getting the patient horizontal. Potentially, this could be done off the ground in a Stokes basket, but just getting the patient in it would be extremely difficult. There are really only two possible postions: slumped over the side or a pile of goo in the bottom. You really need to get them to the ground to be effective.
Assuming the truck is not energized is an essential first step though. Never allow the would-be rescuer to become another victim!