Renovascular hypertension Health Dictionary

Renovascular Hypertension: From 1 Different Sources


disease affecting the arterial supply to the kidneys, leading to ischaemia and resultant stimulation of the renin-*angiotensin-aldosterone axis. In the major vessels, the most common cause is atheromatous plaque disease. Other causes are fibromuscular dysplasia and *Takayasu’s disease.
Health Source: Oxford | Concise Colour Medical Dictionary
Author: Jonathan Law, Elizabeth Martin

Hypertension

High arterial blood pressure... hypertension

Portal Hypertension

Raised blood pressure in the PORTAL VEIN entering the LIVER. This results in increased pressure in the veins of the oesophagus and upper stomach and these grow in size to form varices – dilated tortuous veins. Sometimes these varices rupture, causing bleeding into the oesophagus. The raised pressure also causes ?uid to collect in the abdomen and form ASCITES. The commonest reason for portal hypertension is cirrhosis (?brosis) of the liver (see LIVER, DISEASES OF). THROMBOSIS in the portal vein may also be a cause. Treatment requires the cause to be tackled, but bleeding from ruptured vessels may be stopped by injecting a sclerosant or hardening solution into and around the veins. Sometimes a surgical shunt may be done to divert blood from the portal vein to another blood vessel.... portal hypertension

Pulmonary Hypertension

In this condition, increased resistance to the blood ?ow through the LUNGS occurs. This is usually the result of lung disease, and the consequence is an increase in pulmonary artery pressure and in the pressure in the right side of the heart and in the veins bringing blood to the heart. Chronic BRONCHITIS or EMPHYSEMA commonly constrict the small arteries in the lungs, thus causing pulmonary HYPERTENSION. (See also EISENMENGER SYNDROME.)... pulmonary hypertension

Malignant Hypertension

Malignant hypertension has nothing to do with cancer; it derives its name from the fact that, if untreated, it runs a rapidly fatal course. (See HYPERTENSION.)... malignant hypertension

Essential (benign) Hypertension

See HYPERTENSION.... essential (benign) hypertension

Benign Intracranial Hypertension

see idiopathic intracranial hypertension.... benign intracranial hypertension

Idiopathic Intracranial Hypertension

(benign intracranial hypertension, pseudotumour cerebri) a syndrome of raised pressure within the skull in the absence of a clear structural cause, such as a tumour. Although the cause is not certain, proposed mechanisms include impaired reabsorption of cerebrospinal fluid or venous outflow from the brain. The symptoms include headache, vomiting, double vision, and *papilloedema. The diagnosis is made by finding a high opening pressure at *lumbar puncture in the absence of a causative structural abnormality on brain imaging. It can improve spontaneously but drug therapy or neurosurgical treatment may be required to protect the patient’s vision.... idiopathic intracranial hypertension

Ocular Hypertension

(OHT) a constantly raised intraocular pressure (greater than 21 mmHg by Goldmann applanation *tonometry) registered on two or more occasions in one or both eyes with the absence of evidence of optic nerve damage or visual field defect. Intraocular pressure increases slowly with age and OHT can increase the risk of developing glaucoma. It is treated with eye drops and surgery if indicated.... ocular hypertension

Pregnancy-induced Hypertension

(PIH) raised blood pressure (>140/90 mmHg) developing in a woman during the second half of pregnancy. It usually resolves within six weeks of delivery and is associated with a better prognosis than *pre-eclampsia.... pregnancy-induced hypertension



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