Figure 324

Atherosclerotic renal artery stenosis in patients with generalized atherosclerosis obliterans and in patients with coronary artery disease (CAD). Atherosclerotic renal artery stenosis is common in older patients with and without hypertension simply as a consequence of generalized atherosclerosis obliterans. Approximately 40% of consecutively studied patients undergoing arteriography for routine evaluation of abdominal aortic aneurysm, aorto-occlusive disease, or lower extremity occlusive disease have associated renal artery stenosis (more than 50% unilateral renal artery stenosis) and nearly 30% of patients undergoing coronary angiography may have incidentally detected unilateral renal artery stenosis. Approximately 4% to 13% of patients with CAD or peripheral vascular disease have more than 75% bilateral renal artery stenosis. Correlations of hyper-cholesterolemia and cigarette smoking with renal artery atherosclerosis are not unequivocally clear, but they probably represent risk factors for renal artery atherosclerosis just as they represent risk factors for atherosclerosis in other vascular beds. (Adapted from Olin and coworkers [11]; with permission.)

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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