malignant hypertension (redirected from Hypertension, malignant)

hypertension /hy·per·ten·sion/ (-ten´shun) persistently high arterial blood pressure; it may have no known cause (essential, idiopathic, or primary h.) or may be associated with other diseases (secondary h.) .

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accelerated hypertension  progressive hypertension with the funduscopic vascular changes of malignant hypertension but without papilledema.

adrenal hypertension  that associated with an adrenal tumor which secretes mineralocorticoids.

borderline hypertension  a condition in which the arterial blood pressure is sometimes within the normotensive range and sometimes within the hypertensive range.

Goldblatt hypertension  that caused experimentally by a Goldblatt kidney.

labile hypertension  borderline h.

malignant hypertension  a severe hypertensive state with papilledema of the ocular fundus and vascular hemorrhagic lesions, thickening of the small arteries and arterioles, left ventricular hypertrophy, and poor prognosis.

ocular hypertension  persistently elevated intraocular pressure in the absence of any other signs of glaucoma; it may or may not progress to chronic simple glaucoma.

portal hypertension  abnormally increased pressure in the portal circulation.

pulmonary hypertension  abnormally increased pressure in the pulmonary circulation.

renal hypertension  that associated with or due to renal disease with a factor of parenchymatous ischemia.

renovascular hypertension  that due to occlusive disease of the renal arteries.

systemic venous hypertension  elevation of systemic venous pressure, usually detected by inspection of the jugular veins.

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malignant hypertension

n.

Severe hypertension that runs a rapid course, causing necrosis of arteriolar walls and hemorrhagic lesions.

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malignant hypertension,

the most lethal form of hypertension. It is a fulminating condition characterized by severely elevated blood pressure that commonly damages the intima of small vessels, the brain, the retina, the heart, and the kidneys. It affects more African-Americans than Caucasians and may be caused by a variety of factors, such as stress, genetic predisposition, obesity, use of tobacco, use of oral contraceptives, high intake of sodium, sedentary lifestyle, renal disease, and aging. Many patients with this condition exhibit signs of hypokalemia and alkalosis and have aldosterone secretion rates even higher than those associated with primary aldosteronism. Also called accelerated hypertension. See also essential hypertension.

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hypertension

(hī´purten´shn) (high blood pressure),
n an abnormal elevation of systolic and/or diastolic arterial pressure. Systolic level is generally related to emotional stress, sclerosis of the aorta and large arteries, or aortic insufficiency. Diastolic level may result from obscure causes (essential), renal disease, or endocrine disorders. See also blood pressure.

hypertension, essential,

n a type with an unknown cause.

hypertension, malignant,

n an elevated blood pressure characterized by a progressive course uncontrollable by medication.

hypertension, orthostatic,

n plummeting blood pressure that occurs upon standing up which may be accompanied by dizziness or fainting.

hypertension, portal,

n a type originating in the portal system as occurring in cirrhosis of the liver and other conditions caused by an obstruction of the portal vein.

hypertension pulmonary,

n a type resulting from pulmonary or cardiac disease such as fibrosis of the lung or mitral stenosis.

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malignant (mlig´nnt),

adj 1. resistant to treatment.
2. able to metastasize and kill the host.
3. describing a cancer.

malignant hypertension,

n the most lethal form of high blood pressure. It is a fulminating condition, characterized by severely elevated blood pressure that commonly damages the intima of small vessels, the brain, retina, heart, and kidneys. It affects more persons with racial diversity and may be caused by a variety of factors such as stress, genetic predisposition, obesity, the use of tobacco, the use of oral contraceptives, high intake of sodium chloride, a sedentary lifestyle, and aging.

malignant hyperthermia,

n an autosomal dominant trait characterized by often fatal hyperthermia with rigidity of muscles occurring in affected people exposed to certain anesthetic agents, particularly halothane and succinylcholine.

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malignant hypertension

Accelerated HTN, arteriolar nephrosclerosis Cardiology A condition characterized by severe HTN, retinopathy, renal insufficiency, fibrinoid necrosis of renal arterioles, rapidly progressive and fatal disease Risk groups ♂, African Americans, hypertensives Clinical Headache, blurred vision, N&V, lethargy Complications Stroke, MI, blindness, renal failure. See Hypertension.