Cardiac/Renal Flashcards
nitrates MOA
vasodilator
nitroglycerin preparation and onset
sublingual q5 minutes
onset 1-3 minutes
nitrates examples
nitroglycerin
isosorbide mononitrate
isosorbide mononitrate onset
30-60 mins
nitrate precautions
tolerance
avoid with PDE5 inhibitors for erectile dysfunction
ranolazine MOA
antianginal inhibits sodium
does not cause hypotension
ranolazine vs. nitrates
ranolazine does not lower HR or BP
ranolazine is more expensive ($400/mo)
aspirin MOA
inhibits cyclooxygenase-1
aspirin dosing for acute MI
162-325 mg
aspirin use
decrease mortality and acute MI by 50%
platelet aggregation inhibitors MOA
bind to ADP which decreases platelet aggregation
platelet aggregation inhibitors examples
clopidogrel
prasugrel
which enzyme is responsible for clot lysis?
plasmin
fibrinolytics MOA
convert plasminogen to plasmin
indications for tPA
stroke and MI
calcium channel blocker MOA
coronary vasodilator in peripheral blood vessels
increase o2 supply to heart
which CCBs decrease O2 demand? how?
verapamil and diltiazem
decrease HR and contractiity
when should CCBs be avoided?
heart block
post MI
bradycardia
HF or pulm edema - but CAN use amlodipine and felodipine
CCBs are first line in what type of angina?
prizmental’s
ACE inhibitors MOA
reduces aldosterone secretion to decrease sodium and water retention in kidneys
reduce preload and afterload
arterial dilation
used for hypertension and CHF
indications for ACE inhibitors
DM
HF
renal insufficiency
contraindications to ACEI
pregnancy
angioedema
ACE inhibitors examples
lisinopril (Privinil)
fosinopril (Monopril)
commonly used ARB
valsartan (diovan)
angiotensin II receptor blockers MOA
reduces secretion of aldosterone, reducing sodium and water retention
vasodilation
which has a worse cough? ACE or ARB?
ACE inhibitors
lab monitoring for ACE/ARBs
potassium
creatinine (within 2 weeks of starting)
hypotension
cough
contraindication to ARB
pregnancy
do not use with ACEI!!! can cause renal dysfunction
direct renin inhibitor MOA
binds to binding pocket of renin, inactivating renin
loop diuretics MOA
inhibit NaK2Cl cotransporter in the loop of henle
loop diuretics AEs
lowers K, Na, Mg
increases uric acid
loop diuretics examples
furosemide (lasix), torsemide (demadex)
thiazide diuretics MOA
inhibit NaCl co-transporter in the distal tubule
thiazide diuretics examples
chlorthalidone (hydone)
metolazone (zaroxolyn)
preferred diuretics for CHF
loop diuretics, metolazone
spironolactone AEs
gynecomastia and sexual dysfunction in men and women
alternative for spironolactone
eplerenone (Inspra) does not have sexual side effects
potassium sparing diuretics MOA
inhibit epithelial sodium channel in the collecting duct
spironolactone & eplerenone are aldosterone antagonists
spironolactone MOA
lowers aldosterone
potassium sparing diuretics examples
spironolactone
eplerenone
triamterene
dyazine (HCTZ/triamterene) MOA
HCTZ - thiazide diuretic
triamterene - potassium sparring diuretic
used for K regulation
commonly used statins
rosuvastatin (Crestor)
atorvastatin (Lipitor)
simvastatin (Zocor)
pravastatin (Prevacol)
which statins can be taken at any time of day?
rosuvastatin
atorvastatin
which statins need to be taken at bedtime?
simvastatin
pravastatin
rosuvastatin dosing
20-40 mg
atorvastatin dosing
40-80 mg
precautions for atorvastatin?
many drug interactions and grapefruit
precautions for simvastatin
many drug interactions and grapefruit
statins MOA
inhibition of HMG-CoA
benefit of prevastatin
low incidence of muscle pain
statins AEs
muscle pain (rhabdomyolysis) can lead to kidney damage - stop if CK >10x normal
elevated LFTs - stop if >3x normal AST
lab work for statins
baseline LFTs
baseline CK & with muscle problems
supplement option for muscle pain with statins
CoQ-10 or vitamin D
PCSK9 inhibitors MOA and use
inhibit PCSK9 which increase number of LDL receptors in liver to decrease LDL
second line after statins
examples of PCSK9 inhibitor and dosing
alirocumbab (praluent) SQ every 2 weeks
evolocumab (Repatha) SQ every 2 weeks
ezetimibe (zetia) MOA and use
cholesterol absorption inhibitor in small intestine
3rd line add on to statins for high cholesterol
bile acid sequesterants examples
colestipol (colestid)
colesevalem (welchol)
bile acid sequestrants MOA and use
bind to bile acid to decrease LDL
bile acid sequesterants AEs
constipation, drug interactions - dont take with other meds
can lead to deficiency of fat soluble vitamins
Niacin MOA and use
inhibits triglycerides and decreases secretion of VLDL and LDL particles
add on therapy for high LDL
niaspan MOA and AEs
niacin
can cause liver dysfunction and failure
fibric acids MOA and use
induces clearance of triglyceride-rich particles
lowers triglyceridades
fibric acids examples
gemfibrozil (lopid)
fenofibrate (tricor)
omega 3 fatty acids use and examples
treat triglycerids >500
lovaza
vascepa
OTC fish oils - cheaper
treatment for homozygous familial hypercholesterolemia & precautions
MTP inhibitor - lomitapide (Juxtapid)
antisense oligonucleotide inhibitor - mipomersen (kynamro)
both have BBW for hepatotoxicity!
routine treatment of stage B HFrEF
ACEI & beta blocker
routine treatment of stage C HFrEF
ACEI/Entresto + Beta blocker + loop diuretic
commonly used ARB
valsartan (diovan)
Entresto (sacubitril/valsartan) MOA and use
valsartan - ARB, sacubitril- neprilysin inhibitor
preferred agent for HF but expensive
precaution before starting Entresto
stop ACEI or ARB 2 days before starting Entresto…. can cause angioedema
indication for hydralazine + nitrate
CHF in african americans
hydralazine MOA
direct vasodilator
digoxin MOA
inhibits Na-K-ATPase pump
digoxin indication
used to improve fatigue in patients with CHF
s/s of dig toxicity
nausea, yellow halos
AE of digoxin
dig toxicity
bradycardia
ivabradine (Corlanor) MOA and use
HCN (funny) - channel blocker
used in place of beta blocker in CHF
are calcium channel blockers used for CHF?
no
ESPECIALLY not verapimil/diltiazem
which medications should be avoided in CHF?
NSAIDS
antihyperglycemics - pioglitazone, saxagliptin, alogliptin
sudafed
amiodarone
treatment for acute HF warm and wet
loop diuretics
IV nitro
treatment for acute HF cold and dry
dobutamine
treatment for acute HF cold and wet
dobutamine
milrinone
then start diuretics
diuretics dosing for acute HF
1-2x home dose up to 4 times a day
nesiritide MOA and precautions
vasodilates, decreases aldosterone secretion
may cause hypotension
milrinone (primacor) MOA
phosphodiesterase inhibitor
increases contractility
indication for milrinone
useful in patients taking beta blockers with acute HF
can be used alone or w dobutamine
dobutamine MOA and precautions
increases contractility - B1 agonist
may worsten ischemia
dopamine indication
increase renal perfusion, positive inotrope/chronotrope, vasoconstriction
depends on dose
class I antiarrhythmics
Na channel blockers
IB - lidocaine, mexiletine
IC - flecainide
class II antiarrhythmics
B blockers
class III antiarrhythmics
K channel blockers
amiodarone
class IV antiarrhythmics
CCBs - verapamil, diltiazem
class V antiarrhythmics
adenosine, digoxin
amiodarone precautions/AE
very long half life! days
pulmonary interstitial pneumonitis, hepatotoxicity, hypothyroid
sinus tachycardia treatment
beta blockers
a fib treatment
oral anticoagulants
rate control - amiodarone or digoxin, beta blocker
cardiovert + amio for symptomatic
stable v tach treatment
adenosine, amiodarone, ICD
stable torsades treatment
cardiovert, epi, amio
dronedarone AEs
worsten HF
flecainide AE
worsten HF
mexiletine AE
hepatotoxicity
procainamide AE
neutropenia