Malignant Hypertension

(Hypertensive Emergency; Hypertensive Crisis; Hypertensive Urgency)

Definition

Malignant hypertension is blood pressure that is so high that it is actually causing damage to organs, particularly in the nervous system, the cardiovascular system, and/or the kidneys. One type of such damage is called papilledema, a condition in which the optic nerve leading to the eye becomes dangerously swollen, threatening vision. This is a serious condition that requires immediate care. Rapid treatment can prevent long-term problems. Left untreated, damage from malignant hypertension occurs quickly and can be severe, involving organ damage to blood vessels, the eyes, heart, spleen, kidneys, and brain. In particular, kidney failure may develop since the blood vessels inside the kidneys are very sensitive to high blood pressure.
Cardiovascular System and Kidneys
Placement of Blood Pressure Cuff
Copyright © Nucleus Medical Media, Inc.

Causes

In addition to having high blood pressure , medical conditions leading to the development of malignant hypertension include:
  • History of kidney disorders or failure.
  • Taking certain drugs or medications, including cocaine, amphetamines, monoamine oxidase inhibitors (MAOIs), and oral contraceptives.
  • History of collagen vascular diseases.
  • Pregnant women with preeclampsia and eclampsia.
  • Pheochromocytoma.
  • Spinal cord disorders.
  • Coarctation or dissection of the aorta.
  • Renal artery stenosis or narrowing of the arteries to the kidneys.
  • Missing doses of prescribed antihypertensive medications, particularly beta-blockers or clonidine, which can cause a rebound effect. Medication noncompliance is the most common reason for hypertensive emergencies.

leave comments
0
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals


Chewing Gum After Surgery May Improve Digestive Tract Recovery
April 2015

A systematic review found that participants given chewing gum after abdominal surgery may have a faster return to normal for their digestive system. Unfortunately, the quality of trials is low and more research will need to be done before this simple solution is confirmed.

dot separator
previous editions

Early Peanut Consumption Associated with Lower Risk of Peanut Allergy in High Risk Children
March 2015

Breastfeeding May Decrease the Risk of Childhood Obesity
February 2015

Tonsillectomy May Reduce Number of Sore Throat Days in Children
February 2015

dashed separator

Advertisement

Our Free Newsletter
click here to see all of our uplifting newsletters »

 

Advertisement

Advertisement

DiggDeliciousNewsvineRedditStumbleTechnoratiFacebook