QTS cards - Cardio Pharm Flashcards
(36 cards)
indomethacin
closes PDA
IVAbradine
Inhibit funny If
negative chronotropic
dypiridamole
regadeNOson
vasodilators
Verapamil
Diltiazem
non-dihydropyridines
block initial Ca influx (voltage-dependent l-type ca channels) –> Dec contractility
AE - Negative chronotropic - Dec HR, Dec BP (severe in pts on B-blocker)
constipation
nitroprusside AE
cyanide toxicity
Cyanide toxicity tx
sodium nitrate - methemoglobin
sodium thiosulfate - sulfur donor
hydroxocobalamin - bind cobalt
isosorbide dinitrate
oral
high first pass metabolism - need higher dose
Nitrate tolerance tx
Nitrate Free period
avoid tolerance
Nitrate AE
lightheadness, hypotension, flushing, HA throbbing
STATIN - MOA
HMG-COa reductase inhibitors
Dec hepatic cholesterol synthesis
by INC hepatocyte LDL receptor recycling to INC LDL clearance
STATIN - AE
HMG-COa reductase inhibitors
hepatotoxic (check LFTs)
myopathy, myalgias
INC CK - myonecrosis
Fribrates
Gemfibrozil, -Fibrate
DEC TRIGLYCERIDES
up regulate LPL
activates PPAR-a –> DEC hepatic VLDL production
AE: myopathy, cholesterol gallstones
(INHIBIT cholesterol 7-a-hydroxylase; dec bile acid production –> cholesterol precipitate)
Digoxin
MOA - Inhibit Na/K pump: DEC Na efflux –> Dec Ca efflux
slow AV conduction (Inc parasympathetic tone), but atrial flutter
HF tx
AE - YELLOW vision, nausea, vomit, flushing, diaphoresis (cholinergic)
hyperkalemia - arrhythmia =(
Inc toxicity - DEC renal clearance
Disopyramide
class IA Inhibit Na-channel (depress phase 0 depolarization) Inhibit K-channel (Inc depolarization)
LidocAiNe
class IB bind and block activated and inactivated Na channels
V Tach tx - 2nd line
affects ischemic ventricular tissue
Flecainide
class IC INC QRS - inhibit Na no change in QT interval
Class I - Na channel blocker
anti-arrhythmia
IC>IA>IB
IC - most use dependence
class III - K channel blocker AIDS
anti-arrhythmia
INC AP duration
INC QT interval - lower incidence of torsade de points
Amiodarone AE
class III
hepatotoxic
pulmonary fibrosis - check PFTs
thyroid toxic - check TSH
Sotalol AE
class III torsade de pointes (syncope + polymorphic QRS that changes in amplitude, cycle)
Adenosine
anti-arrhythmia (IV)
DOC x SVT - sudden onset of palpitation
Prolong Phase 4 (Inc K out –> hyper polarization, Dec Ca current)
AE - flushing, chest pain, bronchospasm/burning chest, SOB
use x chemical stress test
Nitrate effect
DEC end systolic LV volume (bc decrease preload)
Dec O2 demand
INC HR (reflex tachy)
Ca channel blockers
VErapamil > diltiazem > amlodipine
Bradycardia, slow AV conduction
AE - peripheral edema
Ca channel blocker vascular smooth muscle
amlodipine = nifedipine > diltiazem > verapamil
vasodilator