on 141 test 1 book: medsurg nursing pg 336
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| def of hyperpituitarism; charecterized by what | hyperfunction of the pituitary gland; excess production and secretion of one or more of its hormones
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| hyperpituitarism: commonly causes what hormone to oversecrete | the growth hormone (GH)
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| def of hypopituitarism; charecterized by what | hypo-function of the anterior pituitary gland; lack of production of one or more of the gland's hormones
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| what is the usual causes of both hypopituitarism & hyperpituitarism | pituitary tumors
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| what happens if there is an excess of growth hormone before puberty; why | it results in gigantism; b/c the growth hormone is responsible for stimulating the growth of the epiphyseal plates ofthe long bones
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| gigantism: s/s of it | ht >7 ft, but body propertions normal
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| gigantism: why is this condition rare today | because of early DX and Tx
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| what happens if there is not enough of growth hormone before puberty | dwarfism (normal body proportions and intelligence)
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| hypersectreion of GH in adulthood causes what | acromegaly
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| def of acromegaly | enlargement of bones and connective tissue
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| what usually stimulates hypersecretion | a benign slow growing tumor
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| why can't long bones grow during hypersecretion | b/c epiphyseal plates close by adulthood
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| s/s of bone growth in adulthood | enlarged forehead and protruding jaw, outgrowth of hands and feet, (s/s take up to 15 years to develop)
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| disorders of the pituitary gland is dx how | by MRI and CT which show pituitary gland enlargment along with elevated serum growth hormone levels
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| acromegaly: tx of it | since cause is by pituitary adenoma, it is treated by transsphenoidal hypophysectomy (surgical removal of the pituitary glan)
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