hypertensive encephalopathy


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encephalopathy

 [en-sef″ah-lop´ah-the]
any degenerative disease of the brain.
AIDS encephalopathy HIV encephalopathy.
anoxic encephalopathy hypoxic encephalopathy.
biliary encephalopathy (bilirubin encephalopathy) kernicterus.
bovine spongiform encephalopathy a prion disease of adult cattle in the British Isles with neurologic symptoms. It is transmitted by feed containing protein in the form of meat and bone meal derived from infected animals. The etiologic agent is also the cause of new variant Creutzfeldt-Jakob disease. Called also mad cow disease.
boxer's encephalopathy (boxer's traumatic encephalopathy) a syndrome due to cumulative head blows absorbed in the boxing ring, characterized by slowing of mental function, occasional bouts of confusion, and scattered memory loss. It may progress to the more serious boxer's dementia. See also postconcussional syndrome.
dialysis encephalopathy a degenerative disease of the brain associated with longterm use of hemodialysis, marked by speech disorders and constant myoclonic jerks, progressing to global dementia.
hepatic encephalopathy a condition, usually occurring secondary to advanced liver disease, marked by disturbances of consciousness that may progress to deep coma (hepatic coma), psychiatric changes of varying degree, flapping tremor, and fetor hepaticus.
HIV encephalopathy (HIV-related encephalopathy) a progressive primary encephalopathy caused by infection with human immunodeficiency virus type I, manifested by a variety of cognitive, motor, and behavioral abnormalities. Called also AIDS encephalopathy.
hypernatremic encephalopathy a severe hemorrhagic encephalopathy induced by the hyperosmolarity accompanying hypernatremia and dehydration.
hypertensive encephalopathy a complex of cerebral phenomena such as headache, convulsions, and coma that occur in the course of malignant hypertension.
hypoxic encephalopathy encephalopathy caused by hypoxia from either decreased rate of blood flow or decreased oxygen content of arterial blood; mild cases cause temporary intellectual, visual, and motor disturbances, and severe cases can cause permanent brain damage within five minutes. Called also anoxic encephalopathy.
lead encephalopathy brain disease caused by lead poisoning.
mitochondrial encephalopathy encephalopathy associated with mitochondrial abnormalities, such as melas syndrome and merrf syndrome.
portal-systemic encephalopathy (portasystemic encephalopathy) hepatic encephalopathy.
progressive subcortical encephalopathy Schilder's disease.
subacute spongiform encephalopathy (transmissible spongiform encephalopathy) prion disease.
traumatic encephalopathy
Wernicke's encephalopathy a neurological disorder characterized by confusion, apathy, drowsiness, ataxia of gait, nystagmus, and ophthalmoplegia; it is due to thiamine deficiency, usually from chronic alcohol abuse. It is almost invariably accompanied by or followed by korsakoff's syndrome and frequently accompanied by other nutritional polyneuropathies. See also wernicke-korsakoff syndrome.

hy·per·ten·sive en·ceph·a·lop·a·thy

a metabolic encephalopathy caused by diffuse cerebral edema; follows an abrupt elevation of blood pressure in a long-term hypertensive patient.

hypertensive encephalopathy

Etymology: Gk, hyper + L, tendere, to stretch; Gk, enkephalos, brain, pathos, disease
a set of symptoms, including headache, lethary, vision changes, convulsions, and coma secondary to end organ damage from critically elevated systolic or diastolic blood pressure.

hypertensive encephalopathy

The abrupt onset of headache and altered mental status that may occur with sudden and extreme elevations in blood pressure (usually diastolic pressures greater than 125 mm Hg). The altered mental states include irritability, confusion, convulsions, and/or coma. Nausea, vomiting, and visual disturbances are common. The symptoms resolve as the blood pressure is brought under control. Hypertensive encephalopathy is an emergency that requires immediate treatment, usually with intravenous medications.
Synonym: posthypoxia syndrome
See also: encephalopathy
References in periodicals archive ?
Cerebral lesions in acute arterial hypertension: The characteristic MRI in hypertensive encephalopathy [Article in German].
Lower blood pressure, in the range of 180/130 mmHg, could thus precipitate hypertensive encephalopathy in younger patients.
She was felt to have possible hypertensive encephalopathy and recurrent subarachnoid hemorrhage.
Rare instances of hypertensive encephalopathy, cerebrovascular accidents, and death have been reported after clonidine withdrawal.
Severe preeclampsia requires prompt treatment to prevent cerebrovascular and cardiovascular complications such as hypertensive encephalopathy, intracerebral haemorrhage and pulmonary oedema.
9%), cerebrovascular accident (22%) and hypertensive encephalopathy (4.
described the relationship between cortical blindness and hypertensive encephalopathy also known as posterior reversible leucoencephalopathy syndrome affected mainly patients with underlying hypertension immunosuppression and renal impairment.
The ethological factors include hypertensive encephalopathy, acute poststreptococcic glomerulonephritis, treatment with immunosuppressive drugs, eclampsia, fluid retention and blood transfusion.
2,10 Hypertensive encephalopathy results from abrupt increase in blood pressure during or after angiography which exceeds the auto regulatory capacity of cerebral vessels producing regions of vasodilatation and vasoconstriction with breakdown of blood brain barrier and focal transudation of fluid.
One patient with hypertensive encephalopathy was treated with oral antihypertensives and transported to the nearest city as soon as possible.

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