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Metabolic Drugs
Thyroid, Adrenals, and Diabetes
84
Pharmacology
Undergraduate 3
04/17/2010

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Cards

Term
Thyroid Replacement 'Levothyroxine' Mechanism of Action
Definition
Replaces thyroid hormone (T3 and T4)
Term
Thyroid Replacement 'Levothyroxine' Indications
Definition
Hypothyroidism of any etiology
Term
Thyroid Replacement 'Levothyroxine' Contraindications
Definition
Thyrotoxicosis; Caution in MI
Term
Thyroid Replacement 'Levothyroxine' Serious Adverse Effects
Definition
Acute overdose causes thyrotoxicosis: tachycardia, angina, tremor, nervousness, insomnia, hyperthermia, heat intolerance, sweating
Term
Thyroid Replacement 'Levothyroxine' Common Adverse Effects
Definition
Chronic overdosage associated with accelerated bone loss and development of atrial fibrillation
Term
Thyroid Replacement 'Levothyroxine' Preadministration assessment
Definition
S/S of hypothyroid (not enough replacement) or hyperthyroid (too much replacement); Note: full effects
Term
Thyroid Replacement 'Levothyroxine' Key Patient Education
Definition
Single daily dose 30 minutes before breakfast; Wear medical alert; Caution if switching brands
Term
Thyroid Replacement 'Levothyroxine' Notes
Definition
Significant drug interactions: Can intensify effects of warfarin; Some drugs interfere with absorption- dose should be separated by four hours
Term
Antithyroid 'Methimazole' Mechanism of action
Definition
Inhibition of thyroid hormone synthesis
Term
Antithyroid 'Methimazole' Indications
Definition
Treat hyperthyroid (Grave's diagnosis); Adjunct to radiation therapy; Suppress thyroid hormone preoperatively; Thyrotoxicosis
Term
Antithyroid 'Methimazole' Contraindications
Definition
Hypersensitivity; Pregnancy, Breastfeeding
Term
Antithyroid 'Methimazole' Serious Adverse Effects
Definition
Agranulocytosis; Hepatotoxicity; Hypoprothrombinemia leading to bleeding
Term
Antithyroid 'Methimazole' Common Adverse Effects
Definition
Hypothyroidism; Skin rash; Hair loss
Term
Antithyroid 'Methimazole' Preadministration Assessment
Definition
S/S of hyperthyroid; TSH and T4 levels
Term
Antithyroid 'Methimazole' Monitoring
Definition
Indications of decreasing thyroid levels- weight gain, reduction in resting heart rate; PT-INR especially prior to surgery
Term
Antithyroid 'Methimazole' Key Patient Education
Definition
Report fever and sore throat (early sign of agranulocytosis); Inform provider prior to any procedure
Term
Glucocorticoid Replacement 'Hydrocortisone' Mechanism of Action
Definition
Synthetic steroid
Term
Glucocorticoid Replacement 'Hydrocortisone' Indications
Definition
Replacement therapy in adrenocorticol insufficiency
Term
Glucocorticoid Replacement 'Hydrocortisone' Contraindications
Definition
None
Term
Glucocorticoid Replacement 'Hydrocortisone' Serious Adverse Effects
Definition
None when given in replacement level doses
Term
Glucocorticoid Replacement 'Hydrocortisone' Common Adverse Effects
Definition
None when given in replacement level doses
Term
Glucocorticoid Replacement 'Hydrocortisone' Preadministration Assessment
Definition
S/S of adrenal hormone insufficiency
Term
Glucocorticoid Replacement 'Hydrocortisone' Monitoring
Definition
Improvement in symptoms; Electrolyte and glucocorticoid levels; Signs of Cushing's syndrome (if dosage too large)
Term
Glucocorticoid Replacement 'Hydrocortisone' Key Patient Education
Definition
Follow dosing- often 2/3 of TDD in AM, rest at bedtime; Dosage must be increased in times of physiologic stress; Carry an emergency supply; Wear identification to inform emergency medical personnel of glucocorticoid requirements
Term
Glucocorticoid Non-Endocrine 'Prednisone' Mechanism of Action
Definition
Inhibit synthesis of chemical mediators, suppress infiltration of phagocytes, suppress proliferation of lymphocytes
Term
Glucocorticoid Non-Endocrine 'Prednisone' Indications
Definition
Anti-inflammatory; Allergy/Asthma; Neoplasms; Immunosuppression
Term
Glucocorticoid Non-Endocrine 'Prednisone' Contraindications
Definition
Systemic fungal infections; Live virus vaccines
Term
Glucocorticoid Non-Endocrine 'Prednisone' Serious Adverse Effects
Definition
Severity of adverse effects is dose related
Term
Glucocorticoid Non-Endocrine 'Prednisone' Common Adverse Effects
Definition
Adrenal insufficiency; Osteoporosis; Infection; Glucose intolerance; Myopathy; Fluid and electrolyte disturbance; Growth retardation; Psychologic disturbances; Cataracts and glaucoma; Peptic ulcer disease; Iatrogenic Cushing's syndrome
Term
Glucocorticoid Non-Endocrine 'Prednisone' Preadministration assessment
Definition
Presence of fungal or difficult to treat infection, assessment of disorder being treated, bone mineral density, identification of high risk patients
Term
Glucocorticoid Non-Endocrine 'Prednisone' Monitoring
Definition
Therapeutic objective achieved?
Fluid and electrolytes (fluid retention, hypokalemia)
Bone density; Growth and development in children
Term
Glucocorticoid Non-Endocrine 'Prednisone' Key Patient Education
Definition
Do not abruptly stop taking!!! Need for additional glucocorticoid for physiologic stress
Carry emergency supply, Emergency Identification
Avoid close contact with people with infections (immunocomprimised)
Restrict sodium intake, Encourage potassium intake
Term
Glucocorticoid Non-Endocrine 'Prednisone' Notes
Definition
Alternate day dosing helps to minimize adverse effects of adrenal suppression and growth retardation
Term
Mineralocorticoid 'Fludrocortisone' Mechanism of Action
Definition
Replaces mineralocorticoid
Term
Mineralocorticoid 'Fludrocortisone' Indications
Definition
Addison's disease; Primary hypoaldosteronism; congenital adrenal hyperplasia
Term
Mineralocorticoid 'Fludrocortisone' Contraindications
Definition
None
Term
Mineralocorticoid 'Fludrocortisone' Serious Advers Effects
Definition
Fluid retention, hypertension, cardiac enlargement, hypokalemia
Term
Mineralocorticoid 'Fludrocortisone' Common Adverse Effects
Definition
Same as serious- dose dependent
Term
Mineralocorticoid 'Fludrocortisone' Preadministration assessment
Definition
Fluid and electrolyte balance
Term
Mineralocorticoid 'Fludrocortisone' Monitoring
Definition
Weight gain (of fluid retention)
Term
Mineralocorticoid 'Fludrocortisone' Key Patient Education
Definition
S/S of fluid retention and hypokalemia
Term
Mineralocorticoid 'Fludrocortisone' Notes
Definition
BP would increase if the drug was working b/c aldosterone is working in body and retaining fluid.
Term
Insulin Mechanism of action
Definition
Replaces intrinsic insulin
Term
Insulin Indications
Definition
Diabetes Mellitus Type I, Type II, Gestational Diabetic Ketoacidosis (hyperkalemia)
Term
Insulin Contraindications
Definition
None- if allergy, patients must undergo desensitization to continue therapy
Less common now that it is all made from human, not animals
Term
Insulin Serious Adverse Effects
Definition
Hypoglycemia
Term
Insulin Common Adverse Effects
Definition
Lipodystrophy (at injection sites) can be minimized by injection site rotation; Hypokalemia with excessive doses
Term
Insulin Preadministration assessment
Definition
Current blood sugar level, S/S of hypoglycemia
Term
Insulin Monitoring
Definition
Routine blood glucose, periodic Hgb A1C (<7%)
Term
Insulin Key Patient Education
Definition
S/S of hypoclycemia; Injection technique; Dosage adjustment (for tight control); Insulin storage
Term
Insulin Notes
Definition
Important to know insulin onset, peak and duration- in relationship with meals; One of the most common medication errors- independent double check is highly recommended!
Term
Biguanides 'Metformin' Mechanism of action
Definition
Inhibits glucose production in liver, slightly reduces glucose absorption in the gut, sensitizes insulin receptors in target tissue
Term
Biguanides 'Metformin' Indications
Definition
Diabetes mellitus Type II; Prevention of Type II Diabetes; Gestational Diabetes; Polycystic ovary syndrome (off label)
Term
Biguanides 'Metformin' Contraindications
Definition
Renal insufficiency; Liver disease; Severe infection; History of lactic acidosis; Shock; Excessive alcohol consumption
Term
Biguanides 'Metformin' Serious Adverse Effects
Definition
Lactic acidosis
Term
Biguanides 'Metformin' Common Adverse Effects
Definition
Decreased appetite, nausea, diarrhea; Decreased absorption of vit B12 and folic acid; note: does not cause hypoglycemia
Term
Biguanides 'Metformin' Preadministration assessment
Definition
Assessment related to indication; Hgb A1C in pts w/diabetes
Term
Biguanides 'Metformin' Monitoring
Definition
Hgb A1C in pts w/diabetes; Delay of onset of diabetes; Improved menstrual cycles and fertility in PCOS
Term
Biguanides 'Metformin' Key Patient Education
Definition
S/S of lactic acidosis- hyperventilation, myalgia, malaise, unusual somnolence; Avoid alcohol; May need vitamin supplement
Term
Biguanides 'Metformin' Notes
Definition
Patients should discontinue use 1-2 days prior to contrast studies and resume 48 hours after the study is completed (risk of renal failure and lactic acidosis)
Term
Sulfonylureas 'Glyburide' (2nd Generation) Mechanism of action
Definition
Stimulate release of insulin
Term
Sulfonylureas 'Glyburide' (2nd Generation) Indications
Definition
Type II diabetes mellitus
Term
Sulfonylureas 'Glyburide' (2nd Generation) Contraindications
Definition
Pregnancy; Breastfeeding
Term
Sulfonylureas 'Glyburide' (2nd Generation) Serious Adverse Effects
Definition
Hypoglycemia (particularly in patients with reduced kidney or liver function)
Term
Sulfonylureas 'Glyburide' (2nd Generation) Common Adverse Effects
Definition
None listed
Term
Sulfonylureas 'Glyburide' (2nd Generation) Preadministration assessment
Definition
Assessment of diabetes related symptoms; Hgb A1C
Term
Sulfonylureas 'Glyburide' (2nd Generation) Monitoring
Definition
Hgb A1C
Term
Sulfonylureas 'Glyburide' (2nd Generation) Key Patient Education
Definition
S/S of hypoglycemia; Avoid alcohol, NSAID, cimetidine (increases hypoglycemia)
Term
Sulfonylureas 'Glyburide' (2nd Generation) Notes
Definition
Possible cardiovascular toxicity; Beta blockers can diminish drug effect and delay awareness of hypoglycemia
Term
Glitazones 'Rosiglitazone' Mechanism of Action
Definition
Reduce glucose levels by decreasing insulin resistance
Term
Glitazones 'Rosiglitazone' Indications
Definition
Type II dibetes mellitus
Term
Glitazones 'Rosiglitazone' Contraindications
Definition
Severe heart failure
Term
Glitazones 'Rosiglitazone' Serious Adverse Effects
Definition
Exacerbation of heart failure (fluid retention)
Term
Glitazones 'Rosiglitazone' Common Adverse Effects
Definition
Headache, Myalgia, Fluid retention, Increased plasma lipids
Term
Glitazones 'Rosiglitazone' Preadministration assessment
Definition
Liver runction; Hgb A1C; S/S related to diabetes
Term
Glitazones 'Rosiglitazone' Monitoring
Definition
Liver function; Hgb A1C
Term
Glitazones 'Rosiglitazone' Key patient Education
Definition
S/S of liver injury; S/S of heart failure
Term
Glitazones 'Rosiglitazone' Notes
Definition
Gemfibrozil can raise levels of rosiglitazone leading to hypoglycemia
Term
Glucagon Mechanism of Action
Definition
Promotes breakdown of glycogen to glucose, reduces conversion of glucose to glycogen, and stimulates glucose synthesis
Term
Glucagon Indications
Definition
Insulin overdose when patient is unable to take oral carbohydrates and IV dextrose is not available or IV access cant be established
Term
Glucagon Contraindications and Serious Adverse Effects
Definition
None
Term
Glucagon Common Adverse Effects
Definition
Hyperglycemia is possible
Term
Glucagon Preadministration Assessment
Definition
Blood glucose level, S/S of hypoglycemia
Term
Glucagon Monitoring
Definition
Blood glucose level, resolution of symptoms of hypoglycemia
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