Ask the Expert

Get answers to your heart disease prevention questions.

Note: This is for informational purposes only. Doctors cannot provide a diagnosis or individual treatment advice via e-mail. Please consult your physician about your specific health care concerns.

Please install flash player to see this video.

Heart Center Virtual Tour

Renovascular hypertension - Overview

Alternative Names

Renal hypertension; Hypertension - renovascular; Renal artery occlusion; Stenosis - renal artery

Definition of Renovascular hypertension:

Renovascular hypertension is high blood pressure due to narrowing of the arteries that carry blood to the kidneys.

Causes, incidence, and risk factors:

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 on the inner lining of the arteries. The plaque may slowly narrow or even block the renal (kidney) aretery.
Risk factors for atherosclerosis are: high blood pressure, smoking, diabetes, high cholesterol, heavy alcohol use, cocaine abuse, and increasing age.

Fibromuscular dysplasia is another cause of renal artery stenosis, particularly in women under age 50. It tends to run in families. Fibromuscular dysplasia is caused by abnormal growth or development of cells in the walls of the arteries leading to the kidneys. This also leads to narrowing or blockage of these arteries.

Hypertensive kidney

Reviewed last on: 5/20/2009
Parul Patel, MD, Private Practice specializing in Nephrology and Kidney and Pancreas Transplantation, Affiliated with California Pacific Medical Center, Department of Transplantation, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Balk E, Raman G, Chung M, Ip S, Tatsioni A, Alonso A, et al. Effectiveness of management strategies for renal artery stenosis: a systematic review. Ann Intern Med. 2006;145:901-912.

DuBose TD Jr, Santos RM. Vascular disorders of the kidney. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 126.

U.S. Preventive Services Task Force. Screening for high blood pressure: U.S. Preventive Services Task Force reaffirmation recommendation statement. Ann Intern Med. 2007;147(11):783-786.

Victor RG. Arterial hypertension. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007.

White CJ. Catheter-based therapy for atherosclerotic renal artery stenosis. Circulation. 2006;113:1464-1473.

Wolff T, Miller T. Evidence for the reaffirmation of the U.S. Preventive Services Task Force recommendation on screening for high blood pressure. Ann Intern Med. 2007;147(11):787-791.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

Home > Medical Reference > Encyclopedia (English)