Chronic hypertension causes: Difference between revisions
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==Common Causes of Secondary Hypertension<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>== | ==Common Causes of Secondary Hypertension<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>== | ||
In only a small minority of patients with elevated arterial pressure can a specific cause be identified. An underlying [[endocrine]] or renal defect is most often identified, that if corrected, may restore the blood pressure back to normal. Common causes of secondary hypertension include: | In only a small minority of patients with elevated arterial pressure can a specific cause be identified. An underlying [[endocrine]] or renal defect is most often identified, that if corrected, may restore the blood pressure back to normal. A secondary cause of hypertension should be suspected if the patient has [[resistant hypertension]] defined as a blood pressure of > 140/90 mm Hg in the presence of adequate doses of three antihypertensives including a [[diuretic]]. Common causes of secondary hypertension include: | ||
* [[Anxiety]] | * [[Anxiety]] |
Revision as of 23:53, 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 most common cause of hypertension in 90% of cases is essential hypertension where no clear identifying underlying cause can be identified, and the pathophysiology of which is incompletely understood. There are many secondary causes of hypertension.
The Most Common Cause
The most common cause of hypertension is essential hypertension which accounts for about 90% of cases of elevated blood pressure.
Common Causes of Secondary Hypertension[1][2]
In only a small minority of patients with elevated arterial pressure can a specific cause be identified. An underlying endocrine or renal defect is most often identified, that if corrected, may restore the blood pressure back to normal. A secondary cause of hypertension should be suspected if the patient has resistant hypertension defined as a blood pressure of > 140/90 mm Hg in the presence of adequate doses of three antihypertensives including a diuretic. Common causes of secondary hypertension include:
- Anxiety
- Arteriosclerosis
- Chronic kidney disease. This includes diseases such as polycystic kidney disease or chronic glomerulonephritis.
- Congenital adrenal hyperplasia
- Cushing's syndrome due to an excessive secretion of glucocorticoids which in turn causes the hypertension
- Drugs:
- Nasal decongestants with adrenergic effects
- NSAIDs
- Oral contraceptives
- Steroids
- Fever
- Hyperaldosteronism (Conn's syndrome): 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.
- Hyperthyroidism
- Hypothyroidism
- Increased salt intake
- Metabolic syndrome
- Obesity
- Obstructive sleep apnea
- Perioperative hypertension: this is the development of hypertension just before, during or after surgery. It may occur before surgery during the induction of anesthesia; intraoperatively e.g. by pain-induced sympathetic nervous system stimulation; in the early postanesthesia period, e.g. by pain-induced sympathetic stimulation, hypothermia, hypoxia, or hypervolemia from excessive intraoperative fluid therapy; and in the 24 to 48 hours after the postoperative period as fluid is mobilized from the extravascular space. In addition, hypertension may develop perioperatively because of discontinuation of long-term antihypertensive medication.
- Pheochromocytoma: Caused by an excessive secretion of norepinephrine and epinephrine which promotes vasoconstriction. Consider this diagnosis in the patient who has a dilated cardiomyopathy (which a pheochromocytoma can cause) who still has an elevated blood pressure. This diagnosis is confirmed by demonstrating increased urinary excretion of epinephrine and norepinephrine and/or their metabolites (vanillylmandelic acid).
- Pregnancy causing gestational hypertension
- Renovascular hypertension: Due to fibromuscular dysplasia and renal artery stenosis. In both conditions, increased blood pressure occurs due to narrowing of arteries supplying to the kidney. Decreased perfusion of renal tissue due to stenosis of a main or branch renal artery activates the renin-angiotensin system.
- Scleroderma
- Stress
- White coat hypertension
Less Common Cuases
- Acromegaly
- Coarctation of the aorta
- Hyperparathyroidism
- Liquorice (black, not red)
- Neurofibromatosis
Complete List of Causes by Organ System
Causes in Alphabetical Order