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322 Endocrine & Diabetes

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Term
Definition
levothyroxine   replacement therapy, increases levels of T4 and deionized to T3  
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levothyroxine interventions   monitor height and weight in infants and children, take on an empty stomach, safe during pregnancy  
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liothyronine   synthetic T3, rapid onset; best absorbed in the GI tract; initial treatment for myxedema  
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methimazole   inhibits thyroid synthesis, does not destroy existing; avoid during pregnancy  
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methimazole side effect   agranulocytosis; report sore throat and fever  
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propylthiouracil   inhibits thyroid production and prevents conversion of T4 to T3; safe in 1st trimester of pregnancy; preferred for thyroid storm  
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propylthiouracil side effects   agranulocytosis, risk for liver injury  
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propylthiouracil administration   shorter half life; requires multiple doses per day  
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radioactive iodine thyroid cancer   high dose  
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radioactive iodine hyperthyroidism   low dose  
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somatropin   administered to a child before the epiphyses are fused; can be abused by athletes  
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somatropin side effects   paresthesia, glucose fluctuations  
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somatropin adverse reactions   seizures, intracranial hypertension, secondary malignancy  
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somatostatin   helps regulate GH release and is produced in the hypothalamus; can cause cardiac toxicity - bradycardia  
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dopamine agonist   inhibits secretion of GH caused by pituitary adenomas  
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dopamine agonist adverse effects   cardiac toxicity - hypertension, MI, angina; cerebrovascular toxicity  
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oral antidiabetics   sulfonylureas and biguanides  
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sulfonylureas   type 2, can be combined with other drugs  
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1st generation sulfonylureas   associated with increased risk of cardiovascular disease  
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2nd generation sulfonylureas   increase tissue response to insulin and decrease glucose production in the liver; glipizide and glyburide  
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2nd generation sulf   longer duration of action and fewer side effects; greater hypoglycemia potency and cannot be used with liver or kidney dysfunction  
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biguanides   metformin, glucophage  
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metformin side effects   anorexia, N/V, decreased B12 levels and folic acid deficiency  
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metformin toxicity   lactic acidosis; drug interaction with alcohol and not recommended with renal impairment  
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metformin withheld   48 hours before or after administration of IV contrast  
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external insulin pump   blood sugar check hourly, how to change tubing, know when to bolus  
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conscious hypoglycemia   fast acting oral sugar  
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unconscious hypoglycemia   IV glucose, parenteral glucagon  
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