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43 Cards in this Set

  • Front
  • Back
Thiazide diuretic

treatment
*HTN
*Edema r/t mild to mod hypertension, hepatic or renal disease, corticosteroid or estrogen therapy
*prevention of calcic renal calculi
*paradoxically decreases urine output in diabetes insipidus
Thiazide diuretics

pharmacokinetics
Absorbed rapidly from GI tract, excreted in urine
Thiazide diuretics

pharmacodynamics
Prevent sodium reabsorption by kidneys. As sodium is excreted, it pulls water along with it. Also causes excretion of K+, bicarb
Thiazide diuretics

contraindications
Pts with sulfa allergies can have a reaction
Thiazide diurectics

considerations
*may cause hyperglycemia
*will reduce K+ levels
*may increase lipid levels
*may increase uric acid levels
Thiazide diurectics

adverse reactions
*reduced blood volume
*orthostatic hypotension
*hyponatremia
*hypokalemia
Thiazide diuretics

drug interations
*may increase lithium levels
*may increase response to skeletal muscule relaxants
*NSAIDs may reduce effectiveness of thiazide diuretics
Thiazide diuretics

common drugs
*hydrochlorothiazide (HydroDIURIL, HCTZ)
*chlorothiazide (Diuril)
*inapamide (Lozol)
Loop diuretics

therapy
*Edema r/t HF,renal and hepatic disease
*HTN
Loop diuretics

pharmacokinetics
*absorbed well with rapid distribution
*highly protein-bound
*metabolized in liver (except furosemide)
*excreted by kidneys
Loop diuretics

pharmacodynamics
Act primarily on the ascending loop of Henle to increase secretion of sodium,chloride, and water. May also inhibit their reabsorption.
Loop diuretics

contraindications
*hypersensitivity
*pts with sulfa allergies?
Loop diuretics

adverse reactions
*hypovolemia
*orthostatic hypertension
*hypokalemia
*hypochloremia
*hyponatremia
*hypocalcemia
*hypomagnesemia
Loop diuretics

considerations
*ototoxic, especially in pts with renal insufficiency
*may cause hyperglycemia
*may cause increased uric acid levels
Loop diuretics

drug interactions
*increased risk of ototoxicity when taken with aminoglyucosides and cisplatin
*reduce effectiveness of oral antidiabetics
*may increase risk of lithium toxicity
*when taken iwth cardiac glycosides, increased risk of lyte imbalnces et resulting arrhythmias.
Loop diuretics

common drugs
*bumetanide (Bumex)
*furosemide (Lasix)
*torsemide (Demadex)
Potassium-sparing diuretics

treatment
*edema
*diuretic-induced hypokalemia in tps with heart failure
*cirrhosis
*nephrotic syndrome
*heart failure
*HTN
Potassium-sparing diuretics

pharmacokinetics
*only po, absorbed in GI tract
*metabolized in liver, excreted in urine and bile
Potassium-sparing diuretics

pharmacodynamics
*Acts in distal tubule to increase Na and H2O secretion. Also increases Chl and Ca excretion.
*Decreases K and H ions.
Potassium-sparing diuretics

adverse reaction
hyperkalemia
Potassium-sparing diuretics

considerations
*Do not use in pts with renal insufficiency or hyperkalemia
*may increase uric acid levels
*pt should avoid excess k in their diet
Potassium-sparing diuretics

common drugs
spironolactone (Aldactone)
amiloride (Midamor)
triamterene (Dyrenium)
Calcium channel blockers

treatment
*prevention of angina
*HTN
*dysrhythmia
Calcium channel blockers

pharmacokinetics
orally, absorbed quickly.
metabolized rapidly in liver
Calcium channel blockers

pharmacodynamics
Prevent passage of Ca+ across membranes of myocardial et vascular smooth-muscle cells. This causes dilation of the coronary et peripheral arteries. Some also slow conduction thru the SA and AV nodes.
Calcium channel blockers

adverse reactions
orthostatic hypotension
heart failure
hypotension
arrhythmias (diltiazsem and verapamil)
Calcium channel blockers

considerations
*d/n take with grapefruit juice
*Ca and vit D reduce effectiveness
Calcium channel blockers

drug interactions
Verapamil and diltiazem increase the risk of dig toxicity, enhance the action of carbamazepine, and may cause myocardial depression
Calcium channel blockers

common drugs
Selective for blood vessels
amlodipine (Norvasc)
nifedipine (Procardia)

Nonselective, for both blood vessels and heart
diltiazem (Cardizem)
verapamil
ACE inhibitors

treatment
*HTN
*heart failure or following an MI
*fluid retention
ACE inhibitors

pharmacokinetics
Absorbed from GI tract, metabolized in liver, excreted by kidneys
ACE inhibitors

pharmacodynamics
Interrupts the renin-angiotensin-aldosterone system by preventing the conversion of angiotensin I to angiotensin II and the subsequent secretion of aldosterone. Less angiotensin II=arteriole dilation, decreased preipheral vascular resistance. Less aldosterone-increased excretion of Na and H2O.
ACE inhibitors

adverse reactions
*headache, fatigue
*persistent cough
*angioedema
*GI reactions
*hyperkalemia
ACE inhibitors

drug interactions
*can increase serum lithium levels
*NSAIDs decrease effectiveness, increase renal dysfunction
ACE inhibitors

contraindications
*history of angioedema
*pts with heart failure taking a potassium-sparing drug
*pregnancy and lactation
*pts with renal insufficiency
ACE inhibitors

considerations
African-Americans tend to experience reduced efficacy and higher incidence of angioedema
ACE inhibitors

common drugs
benazepril (Lotensin)
captopril (Capoten)
enalapril (Vasotec)
lisinopril (Prinivil, Zestril)
quinapril (Accupril)
ramipril (Altace)
Angiotensin II receptor blockers

treatment
*HTN
*management of heart failure
Angiotensin II receptor blockers

pharmacokinetics
vary
Angiotensin II receptor blockers

pharmacodynamics
Block the binding of angiotensinII at the AT1 receptor, preventing angiotensin II from exerting its vasoconstricting properties and from promoting the excretion of aldosterone.
Angiotensin II receptor blockers

adverse reactions
*headache and fatigue
*cough and tickling in the throat
*angioedema
*GI reactions
*increased serum K levels
Angiotensin II receptor blockers

drug interactions
*fluconazole will increase blood levels of losartan
*NSAIDs reduce antihypertensive effects
*rifampin will decrease the antihypertensive effect of losartan
Angiotensin II receptor blockers

common drugs
candesartan (Atacand)
irbesartan (Avapro)
losartan (Cozaar)
olmesartan medoxomil (Benicar)
valsartan (Diovan)