Fainting (Syncope) »
Introduction to fainting (syncope)
Fainting, "blacking out," or syncope is the temporary
loss of consciousness followed by the return to full wakefulness. This loss of
consciousness is accompanied by loss of muscle tone that can result in falling or slumping over.
To better understand why fainting can occur; it is helpful to explain why
somebody is awake.
The brain has multiple parts, including two hemispheres, the cerebellum, and
the brain stem. The brain
requires blood flow to provide oxygen and glucose
(sugar) to its cells to sustain life. For the body to be awake, an area known as
the reticular activating system located in the brain stem needs to be turned on,
and at least one brain hemisphere needs to be functioning. For syncope to occur,
either the reticular activating system needs to lose its blood supply, or both
hemispheres of the brain need to be deprived of blood, oxygen, or glucose. For
the brain to stop functioning, th...
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Clear angiograhm, but continuing shortness of breath on exertion + angina like pressure 'tightness' in the chest, relieved by nitro spray + weakness in the left arm. Pitting edema in the lower legs and ankles. Currently taking a beta blocker, calcium channel blocker, Lipitor, and a water pill. Cardiologist is not sure what the problem is. Published: October 07 ::