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89 Cards in this Set

  • Front
  • Back
Loop diuretics can cause ____ which may precipitate ___?
hyperuricemia; gout
The drug class that is least helpful in heart failure?
Calcium channel blockers (Verapimil, diltiazem, nifedipine)
An increase in systolic cytoplasmic calcium levels is characteristic of what drug?
Digoxin
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?
increased PR interval (ie any parasympathetic effect)
If patient with MI develops acute severe HF with pulmonary edema, what drug is most useful?
Furosemide (loop diuretic) is used in acute pulmonary edema
what is the most likely cause of Dig contributing to arrhythmogenic effects?
increased intracellular calcium
What situation is risky for dig toxicity even if serum potassium is maintained?
quinidine reduces dig clearance
What does DIG do to the AV refractory period, QT interval, Twave?
Increased, decreased, inverted
What drug has important positive intotropic effects in acute heart failure?
dobutamine - beta agonist
What is the main effect of Dig in heart failure?
decreased heart rate
what monovalent cation will decrease or reverse mild/moderate digitalis induced arrhythmia?
potassium
What drug prolongs life in patients with CHF but has a negative inotropic effect?
carvedilol - as do most beta blockers
what is the DOC for treating DIG overdose?
Digoxin antibodies
Given IV for acute heart failure. Significant renal toxicity
nesiritide (VD)
Does DIG prolong life?
no
Digitalis effects is INHIBITED by extracellular ___ and ___ and FACILITATED by extracellular ___
potassium; magnesium

calcium
What does DIG act on?
Na/K ATPase pump inhibitor
The pressure that must be overcome for heart to pump?

The volume of blood the heart must pump?
Afterload

Preload
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
Renin

AGII

Aldosterone
what are 2 HUGE reasons to use beta blockers in heart failure?
Reduce cardiac remodeling; slow HR compensation by inhibiting SA node
About __ of ppl with HF die within 1 year?

About ___ die within 5 years
1/5

1/2
The first DOC for mild heart failure?
ACE (pril) inhibitors or ARBS (sartan)
ACEI reduce preload by ?
Reduce afterload by?
and finally reduce ___?
inhibiting aldosterone
inhibiting AT1 receptor (not directly)
Reduce remodeling
Captoprils most common SE's (2)
dry cough (d/t bradykinin)

angioedema
All ACEI (prils) are prodrugs except ____
captopril
You would never give ___ to a pregnant lady d/t preeclampsia?
ACEI
The drug you add after ACEI/ARB?
diuretic
Beta blockers and ACE inhibitors both inhibit cardiac ___?
remodeling
why are diuretics useful in HF?
Reduce PRELOAD
Name the (2) loop diuretics?
(3) K sparing
(2) Thiazide?
furosemide/ethacrynic acid

spironolactone/amiloride/triamterence

HCTZ/Nedroflumethiazide
What drug is a slow acting diuretic with gynomastia as SE?
spironolactone - K sparing diuretic
What drug's main SE is kidney stone formation?
Trimterene (K sparing) - Try to pass a kidney stone if you use trimterene
What diuretic would you use with liver cirrhoisis?
spironolactone
What diuretic is super fast acting (like a fast ride)
amiloride
what the difference between the 2 loop diuretics?
Furosemide is sulfa drug so can have ADR whereas ethacrynic acid is not
DOC for HTN crisis or pheochromocytoma?
Carvedilol (prototype beta blocker)

racemic mix of alpha1/beta1 blocker
what drug is beta1 selective antagonist and produce NO and decreased TPR?
nebivolol
IV only, SHORT duration. increases inotropic activity of heart; also activates beta2 for VD; it is a beta agonist?
dobutamine
What 2 drug can be used for HTN in pregnancy?
Hydralazine and Methyldopa (most important)
Vasodilators cause __ influx and __ efflux which leads to VSM relaxation
decrease; increase
what preexisting electrolyte defect could precipitate DIG arryhtmias?
potassium - K
hx of HF and acute LVMI with severe pulmonary edema. Which drug to use?
Furosemide
Hx of frequent renal colic with high calcium renal stones. Most useful diuretic for renal stones?
HCTZ - they inhibit renal excrection of Ca
Chronic thiazide use does NOT cause what SE that Loops do?
Ototoxicity
elevated plasma uric acid, elevated blood glucose, elevated blod cholesterol, and decreased urinary Ca excretion would be expect in Chronic ___ use?
thiazide diuretic use
Where does Acetazolamide, Furosemide, Metolazone, Thiazide, and Spiros work in the tubules?
Proximal convoluted tubule (carbonic anhydrase inhibitor)

Thick ascending limb - Loop (20%)

Metolazone/Thiazide so TAL

Collecting tubule
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?
HCTZ b/c it will not reduce rapidly but won't increase it
which drugs interfere with aldosterone production or collecting tubule potassium excretion which are all capable of increased serum potassium?
ARBs, amiloride, spiro, triamterene
what diuretic would be used in coma patient with cerebral edema?
mannitol (direct osmotic agent used to reduce ICP and glaucoma)
what is a common SE of thiazide diuretics?
Hypocalciuria - so also used to reduce kidney stones (the K sparing trimterene causes them though)
how should I manage severe hypercalcemia besides saline infusion?
Loop diuretic (furosemide)
60 y/o c/o paresthesias and nausea with her drug. She is hyperchloremic metabolic acidosis so she's taking?
acetazolamide (SE = GI upset and paresthesia) especially in glaucoma use
which class of diuretic can create hyperchloremic metabolic acidosis?
carbonic anhydrase inhibitors like acetazolamide
potassium sparing diuretics are ___ antagonists in the collecting tubules?
aldosterone
which diuretic can cause hyperkalemic metabolic acidosis?
potassium sparing (spiro, eplerenone, amiloride, triamterene)
what diuretic most likely to cause syncope?
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
what drugs act in the DCT?
HCTZ. metolazone,
Reabsorption of Ca from the urine is ___ and urine Ca is ___ in thiazide diuretic use, which is opposite to what class?
increased; decreased
Loops
what 2 diuretic classes work synergistically to produce extremem diuresis?
Loop + thiazide
The drug that increased dilute urine formation and treats SIADH?
conivaptan (ADH agonists) - these increase aquaporins via V2 receptors
what 2 drugs would be used to create super dilute urine due to ADH oversecretion?
conivaptan and demeclocycline
What is the prototypical ADH agonist?
desmopressin
drug used for acute mountain sickness
acetazolamide
For stage 1 HTN, what diuretic is the go to? when would you not use a diuretic (2)?
Thiazide

Post MI or chornic renal disease
The most efficacious diuretics used for acute pulmonary edema?
Loops (furosemide mainly)
and ethyacrynic acid
3 Carbonic anhydrase inhibtors?
2 osmotic diuretics?
3 loop diuretics?
acetazolamide/dorzolamide/brinzolamide

mannitol/urea

furosemide
ethyacrinic acid
torasemide
3 K sparing diuretics?
5 Thiazide diuretics?
Sprio/amiloride/triamterene

HCTZ/Bendroflumethiazide/Chlorthalidone/metalozone/indapamide
Drug class used in Hypercalcemia and Osteoporosis?
Diuretics (thiazide for osteoporosis b/c promotes Ca reabsorption)
HTN + edema are the primary indications for ___ use
diuretic use
Most of the bicarb and sodium chloride get reabsorped in the ?
PCT (that's where carbonic anhydrase inhibitors act)
Which part of the Tubule is indicated and CI for cirrhosis?
PCT is CI'd for cirrhosis (CAIs)
DCT is indicated (Thiaizde)
Most commonly used in Glaucoma, mountain sickness, and metabolic ALKALOSIS
acetazolamide
Dorzolamide and Brinzolamide are ___ diuretics used to treat ___ b/c they are given ____; Therefore they have no metabolic SEs
Carbonic Anhydrase Inhibitors
glaucoma
topically
indicated in Hypercalcemia, acute renal failure, CHF, pulmonary edema?
Loop diuretic (most efficacious available)
What symporter do Loop diuretics inhibit?
NaK-2CL
main SE include hypokalemia, hyperuricemia (may cause gout), allergic rxn, reversible ototoxicity?
Furosemide/Ethacrynic acid

Eth won't cause allergic b/c not sulfa derivative
The main diuretic used to treat hypercalcemia?
loops (furosemide or ethacrynic acid)
Block Na/CL transporter, blocking NaCL reabsorption which means no water reabsorption?
Thiazide
Where do the thiazide diuretics act?
DCT
A diuretic used in diabetes Insipidus and CHF?
thiazide
what are the 3 MAIN SE's of thiazide diuretics?
Hyponatremia (d/t increased ADH)
Hyperlipidemia (increases LDL)
Allergic Rxn (sulfa derivative)
When a pt has high Ca in urine use ___ diuretics? What about low?
Loop; thiazide
The most potent thiazide diuretic?
Metolazone
The DOC in hepatic cirrhoisis?
spiro - CCT K sparing diuretic
DOC in hyperaldosteronism (Conn's syndrome) b/c it effectiely inhibits aldosterone receptors in the CCT?
Spiro
the 2 main SEs of spiro?
gynecomastia; hyperkalemia
diuretic that is insoluble and can cause Kidney stones?
Triamterene - trying to pass kindey stone b/c it causes them
mainstay for treatment of patients with acute renal failure b/c it helps preserve them during dialysis; also good in decreasing ICP and glaucoma
mannitol (osmotic drug) - ALWAYS IV
SEs of mannitol?
dehydration and HYPERnatremia