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89 Cards in this Set
- Front
- Back
Loop diuretics can cause ____ which may precipitate ___?
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hyperuricemia; gout
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The drug class that is least helpful in heart failure?
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Calcium channel blockers (Verapimil, diltiazem, nifedipine)
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An increase in systolic cytoplasmic calcium levels is characteristic of what drug?
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Digoxin
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Pts been taking Digoxin for years for CHF and is about to receive atropine. A common effect of digoxin that can be blocked by atropine is?
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increased PR interval (ie any parasympathetic effect)
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If patient with MI develops acute severe HF with pulmonary edema, what drug is most useful?
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Furosemide (loop diuretic) is used in acute pulmonary edema
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what is the most likely cause of Dig contributing to arrhythmogenic effects?
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increased intracellular calcium
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What situation is risky for dig toxicity even if serum potassium is maintained?
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quinidine reduces dig clearance
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What does DIG do to the AV refractory period, QT interval, Twave?
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Increased, decreased, inverted
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What drug has important positive intotropic effects in acute heart failure?
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dobutamine - beta agonist
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What is the main effect of Dig in heart failure?
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decreased heart rate
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what monovalent cation will decrease or reverse mild/moderate digitalis induced arrhythmia?
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potassium
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What drug prolongs life in patients with CHF but has a negative inotropic effect?
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carvedilol - as do most beta blockers
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what is the DOC for treating DIG overdose?
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Digoxin antibodies
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Given IV for acute heart failure. Significant renal toxicity
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nesiritide (VD)
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Does DIG prolong life?
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no
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Digitalis effects is INHIBITED by extracellular ___ and ___ and FACILITATED by extracellular ___
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potassium; magnesium
calcium |
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What does DIG act on?
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Na/K ATPase pump inhibitor
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The pressure that must be overcome for heart to pump?
The volume of blood the heart must pump? |
Afterload
Preload |
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Decreased renal blood flow d/t low CO triggers ___ secretion? That in turn activates ___ which increases BP. It also activates ___ which also leads to Na retention and increased BP
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Renin
AGII Aldosterone |
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what are 2 HUGE reasons to use beta blockers in heart failure?
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Reduce cardiac remodeling; slow HR compensation by inhibiting SA node
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About __ of ppl with HF die within 1 year?
About ___ die within 5 years |
1/5
1/2 |
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The first DOC for mild heart failure?
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ACE (pril) inhibitors or ARBS (sartan)
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ACEI reduce preload by ?
Reduce afterload by? and finally reduce ___? |
inhibiting aldosterone
inhibiting AT1 receptor (not directly) Reduce remodeling |
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Captoprils most common SE's (2)
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dry cough (d/t bradykinin)
angioedema |
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All ACEI (prils) are prodrugs except ____
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captopril
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You would never give ___ to a pregnant lady d/t preeclampsia?
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ACEI
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The drug you add after ACEI/ARB?
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diuretic
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Beta blockers and ACE inhibitors both inhibit cardiac ___?
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remodeling
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why are diuretics useful in HF?
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Reduce PRELOAD
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Name the (2) loop diuretics?
(3) K sparing (2) Thiazide? |
furosemide/ethacrynic acid
spironolactone/amiloride/triamterence HCTZ/Nedroflumethiazide |
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What drug is a slow acting diuretic with gynomastia as SE?
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spironolactone - K sparing diuretic
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What drug's main SE is kidney stone formation?
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Trimterene (K sparing) - Try to pass a kidney stone if you use trimterene
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What diuretic would you use with liver cirrhoisis?
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spironolactone
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What diuretic is super fast acting (like a fast ride)
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amiloride
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what the difference between the 2 loop diuretics?
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Furosemide is sulfa drug so can have ADR whereas ethacrynic acid is not
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DOC for HTN crisis or pheochromocytoma?
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Carvedilol (prototype beta blocker)
racemic mix of alpha1/beta1 blocker |
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what drug is beta1 selective antagonist and produce NO and decreased TPR?
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nebivolol
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IV only, SHORT duration. increases inotropic activity of heart; also activates beta2 for VD; it is a beta agonist?
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dobutamine
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What 2 drug can be used for HTN in pregnancy?
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Hydralazine and Methyldopa (most important)
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Vasodilators cause __ influx and __ efflux which leads to VSM relaxation
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decrease; increase
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what preexisting electrolyte defect could precipitate DIG arryhtmias?
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potassium - K
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hx of HF and acute LVMI with severe pulmonary edema. Which drug to use?
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Furosemide
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Hx of frequent renal colic with high calcium renal stones. Most useful diuretic for renal stones?
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HCTZ - they inhibit renal excrection of Ca
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Chronic thiazide use does NOT cause what SE that Loops do?
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Ototoxicity
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elevated plasma uric acid, elevated blood glucose, elevated blod cholesterol, and decreased urinary Ca excretion would be expect in Chronic ___ use?
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thiazide diuretic use
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Where does Acetazolamide, Furosemide, Metolazone, Thiazide, and Spiros work in the tubules?
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Proximal convoluted tubule (carbonic anhydrase inhibitor)
Thick ascending limb - Loop (20%) Metolazone/Thiazide so TAL Collecting tubule |
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pt with long hx of diabetic renal disease and hyperkalemia and recent onset of heart failure needs a diuretic. which is safest with severe hyperkalemia?
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HCTZ b/c it will not reduce rapidly but won't increase it
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which drugs interfere with aldosterone production or collecting tubule potassium excretion which are all capable of increased serum potassium?
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ARBs, amiloride, spiro, triamterene
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what diuretic would be used in coma patient with cerebral edema?
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mannitol (direct osmotic agent used to reduce ICP and glaucoma)
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what is a common SE of thiazide diuretics?
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Hypocalciuria - so also used to reduce kidney stones (the K sparing trimterene causes them though)
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how should I manage severe hypercalcemia besides saline infusion?
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Loop diuretic (furosemide)
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60 y/o c/o paresthesias and nausea with her drug. She is hyperchloremic metabolic acidosis so she's taking?
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acetazolamide (SE = GI upset and paresthesia) especially in glaucoma use
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which class of diuretic can create hyperchloremic metabolic acidosis?
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carbonic anhydrase inhibitors like acetazolamide
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potassium sparing diuretics are ___ antagonists in the collecting tubules?
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aldosterone
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which diuretic can cause hyperkalemic metabolic acidosis?
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potassium sparing (spiro, eplerenone, amiloride, triamterene)
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what diuretic most likely to cause syncope?
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loop diuretic b/c loosing potassium (furosemide) - would consider thiazide b/c they don't spare potassium but they don't reduce blood volume enough to cause syncope
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what drugs act in the DCT?
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HCTZ. metolazone,
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Reabsorption of Ca from the urine is ___ and urine Ca is ___ in thiazide diuretic use, which is opposite to what class?
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increased; decreased
Loops |
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what 2 diuretic classes work synergistically to produce extremem diuresis?
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Loop + thiazide
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The drug that increased dilute urine formation and treats SIADH?
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conivaptan (ADH agonists) - these increase aquaporins via V2 receptors
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what 2 drugs would be used to create super dilute urine due to ADH oversecretion?
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conivaptan and demeclocycline
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What is the prototypical ADH agonist?
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desmopressin
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drug used for acute mountain sickness
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acetazolamide
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For stage 1 HTN, what diuretic is the go to? when would you not use a diuretic (2)?
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Thiazide
Post MI or chornic renal disease |
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The most efficacious diuretics used for acute pulmonary edema?
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Loops (furosemide mainly)
and ethyacrynic acid |
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3 Carbonic anhydrase inhibtors?
2 osmotic diuretics? 3 loop diuretics? |
acetazolamide/dorzolamide/brinzolamide
mannitol/urea furosemide ethyacrinic acid torasemide |
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3 K sparing diuretics?
5 Thiazide diuretics? |
Sprio/amiloride/triamterene
HCTZ/Bendroflumethiazide/Chlorthalidone/metalozone/indapamide |
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Drug class used in Hypercalcemia and Osteoporosis?
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Diuretics (thiazide for osteoporosis b/c promotes Ca reabsorption)
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HTN + edema are the primary indications for ___ use
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diuretic use
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Most of the bicarb and sodium chloride get reabsorped in the ?
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PCT (that's where carbonic anhydrase inhibitors act)
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Which part of the Tubule is indicated and CI for cirrhosis?
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PCT is CI'd for cirrhosis (CAIs)
DCT is indicated (Thiaizde) |
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Most commonly used in Glaucoma, mountain sickness, and metabolic ALKALOSIS
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acetazolamide
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Dorzolamide and Brinzolamide are ___ diuretics used to treat ___ b/c they are given ____; Therefore they have no metabolic SEs
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Carbonic Anhydrase Inhibitors
glaucoma topically |
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indicated in Hypercalcemia, acute renal failure, CHF, pulmonary edema?
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Loop diuretic (most efficacious available)
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What symporter do Loop diuretics inhibit?
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NaK-2CL
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main SE include hypokalemia, hyperuricemia (may cause gout), allergic rxn, reversible ototoxicity?
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Furosemide/Ethacrynic acid
Eth won't cause allergic b/c not sulfa derivative |
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The main diuretic used to treat hypercalcemia?
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loops (furosemide or ethacrynic acid)
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Block Na/CL transporter, blocking NaCL reabsorption which means no water reabsorption?
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Thiazide
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Where do the thiazide diuretics act?
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DCT
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A diuretic used in diabetes Insipidus and CHF?
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thiazide
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what are the 3 MAIN SE's of thiazide diuretics?
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Hyponatremia (d/t increased ADH)
Hyperlipidemia (increases LDL) Allergic Rxn (sulfa derivative) |
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When a pt has high Ca in urine use ___ diuretics? What about low?
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Loop; thiazide
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The most potent thiazide diuretic?
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Metolazone
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The DOC in hepatic cirrhoisis?
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spiro - CCT K sparing diuretic
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DOC in hyperaldosteronism (Conn's syndrome) b/c it effectiely inhibits aldosterone receptors in the CCT?
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Spiro
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the 2 main SEs of spiro?
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gynecomastia; hyperkalemia
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diuretic that is insoluble and can cause Kidney stones?
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Triamterene - trying to pass kindey stone b/c it causes them
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mainstay for treatment of patients with acute renal failure b/c it helps preserve them during dialysis; also good in decreasing ICP and glaucoma
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mannitol (osmotic drug) - ALWAYS IV
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SEs of mannitol?
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dehydration and HYPERnatremia
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