pituitary, thread, parathyroid, and adrenal disorders Flashcards
Anterios pituitary gland secretes (6)
- growth hormone (GH),
- thyroid-stimulating hormone (TSH),
- adrenocorticotropic hormone (ACTH)
- gonadotropins (follicle-stimulating hormone [FSH]
- luteinizing hormone [LH])
- prolactin (PRL).
GH must be administered before the ____ are fused.
epiphyses
What can happen with prolonged GH therapy?
Prolonged GH therapy can antagonize insulin secretion and eventually cause diabetes mellitus.
What is somatropin used for?
Somatropin is a growth hormone used to treat growth failure in children because of GH deficiency. Somatropin is a product that has the identical amino acid sequence as human growth hormone (HGH).
When is somatropin contraindicated in patients?
Prader-Willi syndrome and are severely obese or who have severe respiratory impairment
What can cause gigantism and acromegaly?
GH hypersecretion and are frequently caused by a pituitary tumor.
posterior pituitary gland, known as the _____, secretes _____ and ___.
neurohypophysis
antidiuretic hormone (ADH)
oxytocin
What does ADH do?
ADH promotes water reabsorption from the renal tubules to maintain water balance in the body fluids.
What is diabetes insipidus (DI)?
When there is a deficiency of ADH, large amounts of water are excreted by the kidneys. This condition, called diabetes insipidus (DI), can lead to severe fluid volume deficit and electrolyte imbalances.
DI treatment
ADH replacement, vasopressin, desmopressin acetate
syndrome of inappropriate antidiuretic hormone (SIADH) is
An excessive amount of water retention expanding the intracellular volume
What is the treatment for SIADH?
fluid restrictions, hypertonic saline, or by drugs such as demeclocycline, conivaptan, and tolvaptan.
The adenohypophysis secretes______ in response to ________from the hypothalamus.
thyroid-stimulating hormone (TSH)
thyroid-releasing hormone (TRH)
Excess ___ secretion can cause hyperthyroidism, and a ___ deficit can cause hypothyroidism.
TSH
__________ is the drug of choice for replacement therapy for the treatment of primary hypothyroidism. It increases the levels of T4 and metabolically is deiodinated to T
Levothyroxine sodium
Hyperthyroidism can be treated by _______, _____, or _____, which inhibit either synthesis or release of thyroid hormone.
surgical removal of a portion of the thyroid gland (subtotal thyroidectomy
radioactive iodine therapy
antithyroid drugs
_______ and ______ are effective thioamide antithyroid drugs. They are useful for treating ____, ______, ______; they are also used prior to ______ treatment or ____
Propylthiouracil and methimazole
Graves disease, toxic nodular goiter, or multinodular goiter
radioiodineor thyroid surgery.
The parathyroid glands secrete parathyroid hormone (PTH), which regulates____- levels in the blood. The action of PTH is to promote ______ absorption from the GI tract, promote reabsorption of ____ from the renal tubules, and activate ______
calcium
vitamin D.
____ is a vitamin D analog that promotes calcium absorption from the GI tract and secretion of calcium from bone to the bloodstream.
Calcitriol
what is most common treatment for primary hyperparathyroidism.
Partial or full parathyroidectomy
nursing action prior to bisphosphonate therapy
Serum calcium concentration should be obtained, and any hypocalcemia must be corrected prior
- Adequate intake of calcium and vitamin D is essential during therapy.
Steroids are secreted by the adrenal cortex in response to signals from the _________ axis; the levels are regulated by the __________.
hypothalamus-pituitary-adrenal (HPA)
negative feedback mechanism
adrenal hyposecretion can lead to
adrenal insufficiency, or Addison disease
adrenal hypersecretion
Cushing syndrome
What are some side effects and adverse reactions of high doses or prolonged use of glucocorticoids?
increased blood sugar, abnormal fat deposits in the face and trunk, decreased extremity size, muscle wasting, edema, sodium and water retention, hypertension, euphoria or psychosis, thinned skin with purpura, increased intraocular pressure, peptic ulcers, and growth retardation.
glucocorticoid therapy key nursing intervention
ose should be tapered to allow the adrenal cortex to produce cortisol and other corticosteroids