Renovascular Hypertension is a type of secondary hypertension
caused by abnormal changes in the regular blood flow to the
kidneys. While renovascular hypertension is sometimes discovered
right away in patients who are known to have kidney problems, it
is more commonly diagnosed after a period of observation and
testing. Because of how the kidneys work, renovascular
hypertension usually gets worse if it isn't treated. When the
arteries that carry blood to your kidneys become narrow, less
blood flows to the kidneys. The kidneys mistakenly respond as if
your blood pressure is low and give off hormones that tell the
body to hold on to more salt and water. This causes your blood
pressure to rise. Renal artery stenosis is a narrowing or
blockage of the artery that supplies blood to the kidneys. The
most common cause of renal artery stenosis is hardening of the
arteries (atherosclerosis) from high cholesterol. -
Atherosclerosis (hardening of the arteries) occurs when a
sticky, fatty substance called plaque builds up