Chronic hypertension causes: Difference between revisions
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==Overview== | ==Overview== | ||
The [[pathophysiology of essential hypertension]] is incompletely understood. There are many secondary causes of hypertension. | |||
==Secondary Causes of Hypertension== | |||
[[ | |||
Only in a small minority of patients with elevated arterial pressure, can a specific cause be identified. These individuals will probably have an [[endocrine]] or renal defect that, if corrected, could bring blood pressure back to normal values. Common causes include: | Only in a small minority of patients with elevated arterial pressure, can a specific cause be identified. These individuals will probably have an [[endocrine]] or renal defect that, if corrected, could bring blood pressure back to normal values. Common causes include: | ||
===Renovascular Hypertension=== | |||
:Hypertension produced by diseases of the [[kidney]]. This includes diseases such as [[polycystic kidney disease]] or chronic [[glomerulonephritis]]. Hypertension can also be produced by diseases of the [[renal artery|renal arteries]] supplying the kidney. This is known as [[renovascular hypertension]]; it is thought that decreased perfusion of renal tissue due to [[stenosis]] of a main or branch renal artery activates the renin-angiotensin system. | :Hypertension produced by diseases of the [[kidney]]. This includes diseases such as [[polycystic kidney disease]] or chronic [[glomerulonephritis]]. Hypertension can also be produced by diseases of the [[renal artery|renal arteries]] supplying the kidney. This is known as [[renovascular hypertension]]; it is thought that decreased perfusion of renal tissue due to [[stenosis]] of a main or branch renal artery activates the renin-angiotensin system. | ||
===Adrenal hypertension=== | |||
====Hyperalsosteronism==== | |||
Hypertension is a feature of a variety of adrenal cortical abnormalities. In primary [[aldosteronism]] there is a clear relationship between the aldosterone-induced sodium retention and the hypertension. | |||
====Pheochromocytoma==== | |||
:In patients with [[pheochromocytoma]] increased secretion of [[catecholamines]] such as [[epinephrine]] and [[norepinephrine]] by a tumor (most often located in the adrenal medulla) causes excessive stimulation of [adrenergic receptors], which results in peripheral vasoconstriction and cardiac stimulation. This diagnosis is confirmed by demonstrating increased urinary excretion of epinephrine and norepinephrine and/or their metabolites ([[vanillylmandelic acid]]). | :In patients with [[pheochromocytoma]] increased secretion of [[catecholamines]] such as [[epinephrine]] and [[norepinephrine]] by a tumor (most often located in the adrenal medulla) causes excessive stimulation of [adrenergic receptors], which results in peripheral vasoconstriction and cardiac stimulation. This diagnosis is confirmed by demonstrating increased urinary excretion of epinephrine and norepinephrine and/or their metabolites ([[vanillylmandelic acid]]). | ||
==Causes <ref>isbn=140510368X Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:85</ref><ref>isbn=1591032016 Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:194-195</ref>== | ==Causes <ref>isbn=140510368X Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:85</ref><ref>isbn=1591032016 Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:194-195</ref>== |
Revision as of 21:50, 3 October 2012
Hypertension Main page |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Assistant Editor-In-Chief: Taylor Palmieri
Overview
The pathophysiology of essential hypertension is incompletely understood. There are many secondary causes of hypertension.
Secondary Causes of Hypertension
Only in a small minority of patients with elevated arterial pressure, can a specific cause be identified. These individuals will probably have an endocrine or renal defect that, if corrected, could bring blood pressure back to normal values. Common causes include:
Renovascular Hypertension
- Hypertension produced by diseases of the kidney. This includes diseases such as polycystic kidney disease or chronic glomerulonephritis. Hypertension can also be produced by diseases of the renal arteries supplying the kidney. This is known as renovascular hypertension; it is thought that decreased perfusion of renal tissue due to stenosis of a main or branch renal artery activates the renin-angiotensin system.
Adrenal hypertension
Hyperalsosteronism
Hypertension is a feature of a variety of adrenal cortical abnormalities. In primary aldosteronism there is a clear relationship between the aldosterone-induced sodium retention and the hypertension.
Pheochromocytoma
- In patients with pheochromocytoma increased secretion of catecholamines such as epinephrine and norepinephrine by a tumor (most often located in the adrenal medulla) causes excessive stimulation of [adrenergic receptors], which results in peripheral vasoconstriction and cardiac stimulation. This diagnosis is confirmed by demonstrating increased urinary excretion of epinephrine and norepinephrine and/or their metabolites (vanillylmandelic acid).
Causes [1][2]
Common Causes
- Anxiety
- Arteriosclerosis
- Congenital adrenal hyperplasia
- Essential hypertension
- Glucocorticoids
- Glomerulonephritis
- Gestational hypertension
- Increased salt intake
- Metabolic syndrome
- Obesity
- Renal failure
- Sleep apnea
- Stress
- White coat hypertension
Causes by Organ System
Causes in Alphabetical Order