aldosteronism /al·dos·ter·on·ism/ (al-dos´tĕ-ro-nizm) hyperaldosteronism; an abnormality of electrolyte balance caused by excessive secretion of aldosterone.
Aldosteronism
aldosteronism
primary aldosteronism that due to oversecretion of aldosterone by an adrenal adenoma, marked by hypokalemia, alkalosis, muscular weakness, polyuria, polydipsia, and hypertension.
pseudoprimary aldosteronism signs and symptoms identical to those of primary aldosteronism but caused by factors other than excessive aldosterone secretion.
secondary aldosteronism that due to extra-adrenal stimulation of aldosterone secretion, usually associated with edematous states such as nephrotic syndrome, cirrhosis, heart failure, or malignant hypertension.
al·dos·ter·on·ism ( l-d s t -r -n z m, ld-st r-)n. A disorder marked by excessive secretion of the hormone aldosterone, which can cause weakness, cardiac irregularities, and abnormally high blood pressure. Also called hyperaldosteronism. |
Aldosteronism
A disorder caused by excessive production of the hormone aldosterone, which is produced by a part of the adrenal glands called the adrenal cortex. Causes include a tumor of the adrenal gland (Conn's syndrome), or a disorder reducing the blood flow through the kidney. This leads to overproduction of renin and angiotensin, and in turn causes excessive aldosterone production. Symptoms include hypertension, impaired kidney function, thirst and muscle weakness.
aldosteronism
[al′dōstərō′nizəm, aldos′-]
a condition characterized by the hypersecretion of aldosterone, occurring as a primary disease of the adrenal cortex or, more often, as a secondary disorder in response to various extraadrenal pathologic processes. Primary aldosteronism, also called Conn's syndrome, may be caused by adrenal hyperplasia or by an aldosterone-secreting adenoma. Secondary aldosteronism is associated with increased plasma renin activity and may be induced by nephrotic syndrome, cirrhosis, idiopathic edema, congestive heart failure, trauma, burns, or other kinds of stress. Also called hyperaldosteronism.
observations In many cases the only manifestation of Conn's syndrome is mild to moderate hypertension. Other signs and symptoms include episodic weakness, fatigue, paresthesia, polyuria, polydipsia, and nocturia. Glycosuria, hyperglycemia, and personality disturbances are occasionally manifested. Laboratory tests may show decreased plasma renin activity (measured after restricted sodium and/or diuretic therapy), increased aldosterone levels (measured after sodium loading), normal blood chemistry values, or hypernatremia and hypokalemia. A CT scan may be used to detect the presence of an adenoma.
interventions Treatment includes regular monitoring and control of blood pressure and hypokalemia with spironolactone, amiloride hydrochloride, or angiotensin-converting enzyme inhibitors. A low-sodium diet, cessation of tobacco use, weight reduction (if indicated), and regular exercise are also advised. A unilateral adrenalectomy is performed if an adenoma or a carcinoma is present, and chemotherapy with mitotane may be an option.
nursing considerations Nurses should focus on blood pressure monitoring and education. Instruction is needed in the use and expected side effects of medications, including gynecomastia, menstrual irregularities, and reduced libido with spironolactone. Dietary management (low sodium) should be addressed and a regular exercise regimen established and monitored. Counseling or referrals should be made for those who use tobacco products. The patient and a family member should be taught to monitor blood pressure on a regular basis.
aldosteronism
an abnormality of electrolyte balance caused by excessive secretion of aldosterone; hyperaldosteronism.
primary aldosteronism
that arising from oversecretion of aldosterone by an adrenal adenoma, characterized typically by hypokalemia, alkalosis, muscular weakness, polyuria, polydipsia and hypertension. Called also Conn's syndrome.
pseudoprimary aldosteronism
that caused by bilateral adrenal hyperplasia and having the same signs and symptoms as primary aldosteronism.
secondary aldosteronism
that due to extra-adrenal stimulation of aldosterone secretion; it is associated with edematous states, as in nephrotic syndrome, hepatic cirrhosis and heart failure.
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