what causes hypotension and what are their symptoms?
one form of hypotension is the simple faint. This event usually called SYNCOPE. Anything that lowers the blood pressure can cause faint or lost of consciousness. often it is related to emotional distress or frightening. The body respond to this event by dilating blood vessels and pooling blood in the lower extremeties and in the abdomen;because of stagnation of the blood the heart has no blood to pump forward, causing hypotension.
A person usually goes through the following sequence:
a queasy feeling, dizziness, giddy, warm, sighing respirations or yawning, sweaty, abdominal cramping (sometimes vomiting), blurred or double vision, dim and tunnel vision and even ringing in the ears. these symptoms last in a matter of seconds but can also last in minutes.
what are the other common causes of syncope?
any condition that can cause the BP to fall to about 70 mm of mercury systolic for five ten seconds can cause loss of cosciousness. It had been found that as mean BP fell from an average of 101 to 26 mm Hg, the mean BP flow to the brain fell from 50 to 28 ml/100 grams/ minute as the symptoms of syncope Began. such drop causes hypotension.