insufficiency (redirected from thyroid insufficiency)

insufficiency /in·suf·fi·cien·cy/ (-sah-fish´in-se) inability to perform properly an allotted function.

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adrenal insufficiency 

1. hypoadrenalism; abnormally diminished activity of the adrenal gland.

2. adrenocortical i.

adrenocortical insufficiency  abnormally diminished secretion of corticosteroids by the adrenal cortex, as in Addison's disease.

aortic insufficiency  defective functioning of the aortic valve, with incomplete closure resulting in aortic regurgitation.

cardiac insufficiency  heart failure.

coronary insufficiency  decrease in flow of blood through the coronary blood vessels.

insufficiency of the externi  deficient power in the externi muscles of the eye, resulting in esophoria.

ileocecal insufficiency  inability of the ileocecal valve to prevent backflow of contents from the cecum into the ileum.

insufficiency of the interni  deficient power in the interni muscles of the eye, resulting in exophoria.

mitral insufficiency  defective functioning of the mitral valve, with incomplete closure causing mitral regurgitation.

pulmonary insufficiency  defective functioning of the pulmonary valve, with incomplete closure causing pulmonic regurgitation.

thyroid insufficiency  hypothyroidism.

tricuspid insufficiency  defective functioning of the tricuspid valve, with incomplete closure causing tricuspid regurgitation; it is usually secondary to systolic overload.

valvular insufficiency 

1. dysfunction of a cardiac valve, with incomplete closure resulting in valvular regurgitation; named for the valve involved.

2. venous i.

velopharyngeal insufficiency  failure of velopharyngeal closure due to cleft palate, muscular dysfunction, etc., resulting in defective speech.

venous insufficiency  inadequacy of the venous valves with impairment of venous drainage, resulting in edema.

vertebrobasilar insufficiency  transient ischemia of the brain stem and cerebellum due to stenosis of the vertebral or basilar artery.

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in·suf·fi·cien·cy (ns-fshn-s)

n.

1. An inability of a bodily part or an organ to function normally.

2. A moral or mental incompetence.

3. An inadequate supply.

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insufficiency

[in′səfish′ənsē]

Etymology: L, in, not, sufficere, to be adequate

inability to perform a necessary function adequately. Some kinds of insufficiencies are adrenal insufficiency, aortic insufficiency, ileocecal insufficiency, pulmonary insufficiency, and valvular insufficiency.

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insufficiency

inability to perform properly an allotted function.

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adrenal insufficiency

hypoadrenalism.

aortic insufficiency

inadequacy of the aortic valve, permitting blood to flow back into the left ventricle of the heart.

cardiac insufficiency

inability of the heart to perform its function properly; heart failure.

coronary insufficiency

decreased supply of blood to the myocardium resulting from constriction or obstruction of the coronary arteries, but not accompanied by necrosis of the myocardial cells. Called also ischemic myocardial necrosis.

hepatic insufficiency

inadequate liver function, short of hepatic failure.

ileocecal insufficiency

inability of the ileocecal valve to prevent backflow of contents from the cecum into the ileum.

pulmonary insufficiency

insufficiency of the pulmonary valve, permitting blood to flow into the right ventricle of the heart.

respiratory insufficiency

a condition in which respiratory function is inadequate to meet the body's needs when increased physical activity places extra demands on it. See also respiratory insufficiency.

thyroid insufficiency

hypothyroidism.

valvular insufficiency

failure of a cardiac valve to close perfectly, causing the blood to flow back through the orifice (valvular regurgitation); named, according to the valve affected, aortic, mitral, pulmonary or tricuspid insufficiency.

velopharyngeal insufficiency

failure of velopharyngeal closure due to cleft palate, muscular dysfunction, etc., resulting in defective swallowing with regurgitation through the nose.

venous insufficiency

inadequacy of the venous valves with impairment of venous drainage, resulting in edema.

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insufficiency

Medtalk A lack of complete function. See Adrenal insufficiency, Chronic venous insufficiency, Haploinsufficiency, Pancreatic insufficiency, Renal insufficiency, Respiratory insufficiency.