Hydrostatic shock/intolerance

[Guest guest]

Hi all,

I wondered if anyone out there could help me.

I am doing a project on water rescue and would like to know more about

hydrostatic intolerance.

So far I have learnt that when a person is up to their necks in water for a

prolonged period of time, the pressure exerted on them elivates their blood

pressure. The heart copes with this by slowing down. However, when the person is

rescued and kept vertical, there is a sudden drop in BP and the patient goes

into shock. Am I correct?

What I am after is information on any research that has been done on this and if

anyone out there has come across any thing on the internet. My searches so far

have not been successful.

Thanking you all in advance,

Kal