Pharm week 10 Flashcards
How long is replacement therapy for hypothyroidism
lifelong
what is used to evaluate progress of hypothyroid therapy
serum TSH levels
Vasopressin analog
desmopressin, vasopressin
action of vasopressins
increase the reabsorption of water
side effects of vasopressins
symptoms of water intoxication*, drowsiness, headache leading to coma and death
contraindications of vasopressins
caution in patients with CAD, HTN, hyponatremia*
drug effects of vasopressins
increased effect of ADH with NSAIDs; decreased effect of ADH with ETOH, heparin
Thyroid hormone
levothyroxine
adverse effects of levothyroxine
rare; palpitations, dysrhythmias, anxiety, insomnia, weight loss, heat intolerance
nursing for levothyroxine
same time every day in a.m. on empty stomach to prevent insomnia; monitor pulse- hold/call MD if > 100; teach patient med is lifelong
drug effects of levothyroxine
increases effects of warfarin; antacids reduce absorption- take 4 hrs apart; antidepressants and anticonvulsants can reduce absorption
antithyroid drug
methimazole
adverse effects of methimazole
agranulocytosis
drug effects of methimazole
increased effects of warfarin, increased effects of digoxin
nursing for methimazole
symptoms of hypothyroidism; teach patient to call doctor if fever or sore throat develops; do not stop med abruptly; assess for iodism (vomiting, abdominal pain, metallic taste, sore gums)
Labs: CBC, T3, T4, TSH
overdose of methimazole
thyroid hormone, atropine for bradycardia
corticosteroid
hydrocortisone, prednisone, dexamethasone
side effects of corticosteroids
sodium & fluid retention; CNS(insomnia, anxiety, headache, vertigo, confusion, depression), adrenal suppression, infection, long term can cause PUD & Cushing’s Syndrome
nursing for corticosteroids
give at the same time every day with food; if given for more than 2 weeks, must taper dose
drug interactions for corticosteroids
NSAIDs and ETOH can increase risk of PUD; anticoagulants can increase or decrease anticoagulants, vaccines can reduce antibody response
short-acting hypoglycemic drug
human regular insulin (Humulin R, Novolin R)
adverse effects of insulin
Hypoglycemia, tachycardia, confusion, sweating, drowsiness, weight gain
nursing for insulin
administer 30 minutes before meals, rotate sites; this is the only insulin that can be given IV
Labs for insulin
monitor potassium; insulin can worsen hypokalemia
insulin overdose
glucagon, glucose
insulin potentiates
ETOH, ASA, MAOI
insulin antagonists
corticosteroids, thyroid hormone, epinephrine
drugs that may increase glucose
furosemide & thiazides; symptoms of hypoglycaemia may be masked with beta blockers
biguanide
metformin
adverse effects of metformin
diarrhea, abdominal discomfort, metallic taste, and anorexia
nursing for metformin
check fasting blood glucose every 3 months
contraindications of metformin
those with renal impairment because the drug can rise to toxic levels
drug interactions with metformin
must hold drug for 2 days prior and 2 days after iodine-radiocontrast dye
metformin overdose
hemodialysis