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katzung drug questions
CVM II
20
Medical
Graduate
04/18/2010

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Cards

Term
are Ca+ channel blockers helpful in heart failure?
Definition
no - they cause too much cardiac depression
Term
what common effect of digoxin can be blocked by atropine?
Definition
increased PR interval on the EKG
Term
DOC for severe acute heart failure w/marked pulmonary edema?
Definition
furosemide
Term
what drug will prolong life in CHF pts as well as have negative effect on cardiac contractility?
Definition
carvedilol/labetalol
Term
what beta 1 agonist is sometimes used in acute heart failure?
Definition
dobutamine
Term
should hyperkalemia be avoided with procainamide usage?
Definition
yes, hyperkalemia facilitates procainamide toxicity
Term
what is an ADR for loop diuretics?
Definition
furosemide = ototoxicity
Term
where does spironolactone work?
Definition
collecting tubule
Term
where does furosemide work? how much Na secretion can it incur?
Definition
thick ascending limb
Term
where do thiazides work? what Na load?
Definition
DCT - 5-10% of the Na load
Term
would HCTZ increase serum K+?
Definition
no
Term
why would drugs that interfere with aldosterone (ACE inhibitors, AT-1 blockers) be contraindicated in hyperkalemia?
Definition
these block aldoesterone which stimulates the Na/K pump to kick out K and keep Na (and thus water)
Term
can mannitol help in cerebral edema?
Definition
yes
Term
is orthostatic hypotension associated with furosemide?
Definition
yes
Term
can acetazolamide cause comas in pts with cirrhosis?
Definition
yes, acetazolimide can cause metabolic acidosis and urinary alkalosis. urinary alkalosis causes urea (which the liver can no longer process) to become ammonia gas, which is rapidly reabsorbed = hyperammonia = coma
Term
what drugs can dilute urine (in water loaded subjects) and are used to treat SIADH (ectopic ADH secretion)?
Definition
conivaptan and democycline - which block the V2 receptor in the collecting duct from ADH stopping diuresis
Term
can niacin help raise HDL?
Definition
yes
Term
can bile acid binding resins raise VLDL in pts with familial hyperlipidemia?
Definition
yes
Term
can alcohol raise HDL?
Definition
yes
Term
what form of lipid does alcohol ingestion raise?
Definition
TGs
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