Thursday, October 28, 2010

Fainting

Just a little excerpt from my Anatomy and Physiology textbook....

"However, when an individual stands at attention, with knees locked and leg muscles immobile, these mechanisms [venous return and cardiac output] are impaired, and the reduction in venous return leads to a fall in cardiac output. The blood supply to the brain is in turn reduced, sometimes enough to cause fainting, a temporary loss of consciousness. The person then collapses; once the body is horizontal, both venous return and cardiac output return to normal" (Martini & Bartholomew, 2010, p. 439).

Little nursing tidbit of the evening....



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