click below
click below
Normal Size Small Size show me how
study for LVN nclex
endocrine disorders for LVN nclex review
Question | Answer |
---|---|
What is on top of each kidney; regulates sodium and electrolyte balance; affects carb., fat & protein metabolism;influences development of sex characterisitics; and sustains "fight or flight" response? | Adrenal Gland |
Is the outer shell of the adrenal gland and synthesizes glucocorticoids and mineralocorticoids; secretes small amounts of sex hormones (i.e. androgens and estrogens). | Adrenal Cortex |
Is the inner core of the adrenal gland; works as part of the sympathetic nervous system; produces epinephrine and norepinephrine. | Adrenal Medulla |
Is located on the anterior part of the neck; controls the rate of body metabolism and growth; produces thyroxine(T4), triiodothyronine (T3), and thyrocalcitonin. | Thyroid Gland |
What is located on the thyroid gland; controls calcium and phosphorous metabolism; produces parathyroid hormone? | Parathyroid Glands |
It is located posterior to the stomach; influences carbohydrate metabolism; indirectly influences fat and protein metabolism; and produces insulin and glucagon. | Pancreas |
This is located in the pelvic cavity and produces estrogen and progesterone. | Ovaries |
These are located in the scrotum; they control the development of the secondary sex characteristics and produces testosterone. | Testes |
This regulates hormone secretion by the hypothalamus and pituitary gland; (increased amounts of target gland hormones in the bloodstream decrease the secretion of the same hormone and other hormones that stimulate their release). | NegativeFeedback Loop |
The portion of the diencephalon of the brain that forms the floor and part of the lateral wall of the third ventricle; activates, controls, and integrates the peripheral autonomic nervous system, the endocrine processes, and many somatic functions. | Hypothalamus |
Is the master gland; located at the base of the brain;influenced by hypothalamus; directly affects function of other endocrine glands; promotes growth of body tissue, influences water absorption by kidney, & controls sex development and function. | Pituitary Gland |
Hyposecretion of one or more of the pituitary hormones caused by tumors, trauma, encephalitis, autoimmunity, or stroke. | Hypopituitarism |
Horomones that are affected by hypopituitarism | Growth hormone (GH), and the gonadotropins (luteinizing hormone and follicle-stimulating hormone), but Thyroid stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), and antidiuretic hormone (ADH) may be involved. |
Signs and Symptoms of hypopituitarism | mild to modrate obesity; reduced cardiac output; infertility and sexual dysfunction; fatigue and low blood pressure (tumors may cause headaches and visual defects. |
The hypersecretion of growth hormone (GH) by the anterior pituitary gland in an adult and is caused primarily by pituitary tumors; leads to conditions such as acromegaly and Cushing's disease | Hyperpituitarism |
Signs and symptoms of hyperpituitarism | large hands and feet; thickening and protrusion of jaw; arthritic changes; visual disturbances; diaphoresis; oily, rough skin; organomegaly; HTN; dysphagia; deepening of voice |
What is hypophysectomy? | pituitary adenectomy, transsphenoidal surgery |
Hyposecretion of ADH caused by strokes, trauma, and idiopathic causes; kidney tubules fail to reabsorb water | Diabetes Insipidus |
Signs and symptoms of Diabetes Insipidus | polyuria of 4 to 24 L/day; polydipsia; dehydration; inability to concentrate urine; a low specific urine gravity (1.006 or less); fatigue; muscle pain and weakness; Headache; postural HTN; tachycardia |
Excess ADH is released, but not in response to the bodily needs; causes include trauma, stroke, malignancies; medications and stress; the syndrome results in water intoxication and hyponatremia. | Syndrome of inappropriae antidiuretic hormone (SIADH) |
Signs and symptoms of SIADH | signs of fluid volume overload; changes in LOC and mental status changes; weight gain; HTN; tachycardia; anorexia, nausea, and vomiting; hyponatremia |
What are medications used to treat SIADH? | Demeclocycline (Declomycin)- inhibits ADH-induced water reabsorption and produces water diuresis |
Medications for diabetes insipidus | Chlorpropamide (Diabinese) for mild case; Vasopressin tannate (Pitressin) or desmopressin acetate (DDAVP, Stimate) - for severe or chronic cases |
Hyposecretion of adrenal cortex hormones (glucocorticoids and minerlocorticoids); can be prkmary or secondary; is fatal if untreated | Addison's disease |
Signs and symptoms of Addison's Disease | letargy, fatigue, and muscle weakness; GI disturbances; weight loss; menstrual changes in women, impotence in men; hypoglycemia and hyponatremia; hyperkalemia and hypercalcemia; postural HTN; hyperpigmentation of the skin (bronzed) with primary disease |
Medications for Addison's disease | administer glucocorticoid and mineralocorticoid medications (need for lifelong glucocorticoid therapy) |
a life threatening disorder caused by acute adrenal insufficiency; precipitated by stress, infection, trauma, surgery, or the abrupt withdrawal of exogenous corticosteroid use; can cause hyponatremia, hyperkalemia, hypoglycemia and shock | Addisonian crisis |
Addisonian crisis medications | adminster I.V. glucocorticoids as prescribed; hydrocortisone sodium sucinate (Solu-Cortef) is prescribed initially; after resolution of crisis administer glucocorticoids and mineralocorticoids orally, as prescribed |
characterized by hypersecretion of glucocorticoids from the adrenal cortex; is a metabolic disorder results from the chronic and excessive production of cortisol by the adrenal cortex or administration of glucocorticoids in lg. doses over several weeks | Cushing's Disease (hypercortisolism) |
Signs and symptoms of Cushing's Disease | generalized muscle wasting and weakness; moonface and buffalo hump; truncal obesity with thin extremeties; hirsutism; hyperglycemia and hypernatremia; hypokalemia HTN; fragile skin that bruises easily; reddish-purple striae on abdomen and upper thighs |
Medications for Cushing's Disease (hypercortisolism) | administer chemotherapeutic agents for inoperable adrenal tumors; prepare patient for radiation if pituitary adenoma; glucocorticoids may be adminstered after a adrenalectomy |
hypersecretion of mineralocorticoids(aldosterone) from the adrenal cortex of adrenal gland; most commonly caused by an adenoma | Primary hyperaldosteronism (Conn's syndrome) |
Signs and symptoms of Conn's Syndrome (metabolic alkalosis) | Symptoms related to hypokalemia, hypernatremia, and HTN; HA, fatigue, muscle weakness, and nocturia; polydipsia and polyuria; paresthesias; visual changes; low urine specific gravity and increased urinary aldosteronism; elevated serum aldosterone levels |
Medications for Conn's syndrome (hyperaldosteronism) | Spironolactone (Aldactone) may be prescribed; administer potassium supplements, administer glucocorticoids preoperatively to prevent hypofunction, glucocorticoid therapy will be given after adrenalectomy. |
A catecholamine-producing tumor that is usually found in the adrenal medulla; excessive amounts of epinephrine and norepinephrine are secreted | Pheochromocytoma |
Complications of pheochromocytoma | hypertensive crisis, hypertensive retinopathy, and neuropathy; cardiac enlargement and dysrhythmias; CHF; MI; increased platelet aggregation and brain attack; and death from shock, renal failure, dysrhythmias, or dissecting aortic aneurysm |
signs and symptoms of pheochromocytoma | paroxysmal or sustained HTN; severe HA; palpitations; flushinfg and profuse diaphoresis; pain in chest or abdomen with nausea and vomiting; heat intolerance; weight loss; tremors; hyperglycemia |
Medications for pheochromocytoma | administer a x-adrenergic blocking agent (i.e. phenoxybenzamine ([Dibenzyline]) as prescribed to control HTN |
hyposecretion of the thyroid hormones T3 and T4; characterized by a decreased rate of body metabolism | Hypothyroidism |
Signs and symptoms of hypothyroidism | lethargy and fatigue; weakness, muscle aches, and paresthesias; intolerance to cold; weight gain; dry skin and hair & loss of body hair; bradycardia;constipation; generalized puffiness and edema(myxedema);forgetfulness and memory loss; cardiac enlargement |
Medications for hypothyroidism | levothyroxine sodium (Synthyroid)- most common |
A rare but serious disorder that results from persistently low thyroid production; coma ca be precipitated by acute illness, the rapid withdrawal of thyroid meds., anesthesia, surgery, hypothermia, or use of sedatives and opiod analgesics | Myxedema Coma |
signs and symptoms of myxedema coma | hypotension; bradycardia; hypothermia; hyponatremia; hypoglycemia; generalized edema; respiratory failure; and coma |
Medications used for Myxedema Coma | Administer I.V. levothyroxine sodium (Synthyroid) as prescribed; administer I.V. glucose; administer corticosteroids, as prescribed |
ahypersecretion of the thyroid hormones T3 and T4; characterized by an increased rate of body metabolism; common cause is Grave's disease, which is a toxic diffuse goiter; referred to as thyrotoxicosis | Hyperthyroidism (Grave's disease) |
signs and symptoms of hyperthyroidism (Grave's disease0 | enlarged thyroid gland(goiter); palpitations and cardiac dysrhythmias (tachycardia), protruding eyeballs(exophthalmos); HTN; heat intolerance; diaphoresis; weight loss; diarrhea; smooth, skin & hair; nervousness and fine tremors of hands; irritability |
Medications for hyperthyroidsim | adminster antithyroid medications (e.g. propylthiouracil) that block thyroid synthesis; administer iodine preparations that inhibit the release of the thyroid hormone; administer propanolol (Inderal) for tachycardia as prescribed |
An acute and life-threatening condition that occurs in a client with uncontrollable hyperthyroidism; result of manipulation of thyroid gland in thyroid surgery, thyroid hormone released into bloodstream, or severe infection or stress. | Thyroid Storm |
signs and symptoms of thyroid storm | elevated temperature; tachycardia; systolic HTN; nausea, vomiting and diarrhea; agitation and tremors and anxiety; irritability, agitation, restlessness, confusion, and seizures as conditin progresses; delirium and coma |
v |