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88 Cards in this Set

  • Front
  • Back
2 antiplatelet agents
Aspirin and Clopidogrel
2 drugs for peripheral arterial disease
Cilostazol and Pentoxifylline
Mechanism of action for Cilostazol
Inhibits phosphodiesterase type III - increases cAMP in platelets and vasculature - decrease platelet aggregation and vasodilation
Mechanism of action for Pentoxifylline
Increases erythrocyte flexibility and decreases plasma fibrinogen - increases tissue oxygenation
First line for Peripheral Arterial disease
Cilostazol
What kind of vasodilators might be used to treat Raynaud's disease
CCB, alpha blockers, nitrates, ACEI
What does endothelin do?
Vasoconstriction and increase in smooth muscle proliferation
In pulmonary arterial hypertension you have an increase in? and a decrease in? with smooth muscle dysfunction.
Increase in Endothelin; decrease in Prostacyclin and Nitric Oxide
What does prostacylin and nitric oxide do?
Vasodilate, inhibit platelet aggregation, inhibit smooth muscle proliferation
Epoprostenol
Prostacyclin Analogue - IV
Treprostinil
Prostacyclin Analogue - IV or inhalation
Iloprost
Prostacyclin Analogue - inhalation
Bosentan
Endothelin Receptor Antagonist - blocks both A and B
Ambrisentan
Endothelin receptor antagonist - blocks just A
Sildenafil
Phosphodiesterase type 5 inhibitor
Tadalafil
Phosphodiesterase type 5 inhibitor
Beta blockers used for heart failure
Sustained release Metoprolol, Bisoprolol, Carvedilol
Inamrinone
Phosphodiesterase inhibitor (increases cAMP)
Milrinone
Phosphodiesterase inhibitor (increases cAMP)
Nesiritide
BNP - activates guanylyl cyclase - increases cGMP - dilates arteries and veins
What to use with a life threatening digoxin toxicity?
Digibind - Digoxin immune Fab
2 drugs that can give you gynecomastia
Spironolactone and Digoxin
Class IA antiarrhythmic drugs
Quinidine, Procainamide, and Disopyramide
Quinidine
Class IA - Blocks Na and K channels- works on all types of arrhythmias
Adverse effects of Quinidine
Cinchonism: headache, tinnitus, hearing loss, dizziness, confusion, disturbed vision; Torsades de pointes; 30-50% have nausea
Quinidine can have an initial increase in ventricular rate by:
Inhibiting vagal effect on the heart; slows conduction of reentry circuit but increases AV conduction
Cinchonism
Think Quinidine; headache, tinnitus, dizziness, hearing loss, confusion, disturbed vision
Procainamide is just like Disopyramide except:
Less antimuscarinic effect, short half life (so used IV!), Lupus like syndrome, ganglionic blocker
Disopyramide is just like Procainamide execept:
More antimuscarinic effect, negative inotropic effect (don't want ot use with HF)
Procainamide is the same as quinidine except:
Less effective at suppressing abnormal ectopic pacemaker activity, less antimuscarinic activity, does not block alpha receptors
ACLS says that procainamide is a good drug for:
Ventricular fibrillation or pulseless ventricular tachycardia; not a drug of choice for chronic use
Antiarrhythmic drug that can give you a Lupus-like syndrome:
Procainamide
Procainamide can cause hypotension because:
It is a ganglionic blocker
Disopyramide is just like Quinidine except:
More marked antimuscarinic effect, no alpha blocking activity
Disopyramide has more of an antimuscarinic effect so you can expect side effects to be:
Urinary retention and dry mouth
Antiarrhythmic Class IB
Lidocaine and Mexiletine
Lidocaine
Class IB: blocks fast Na channels (very fast recovery from block) - greatest effect on depolarized/ischemic Purkinje and Ventricular tissue
Although Lidocaine does not block K channels it does:
Shortens action potential duration and effective refractory period
Is Lidocaine taken orally or via IV?
IV only so not used chronically
Is Quinidine taken orally or via IV?
Not used IV due to hypotensive effects - just orally
Is Procainamide taken orally or via IV?
Short half life so IV
ACLS recommends that Lidocaine be taken with:
Acute Ventricular tachycardia or fibrillation - not used chronically due to being an IV drug
Lidocaine can be used as a local anesthetic so adverse effects when taken IV include:
CNS issues; paresthesia, tremor, nausea, hearing disturbances, slurred speech, convulsions
Mexiletine
Class IB - just like Lidocaine but can be taken orally so can be used chronically
Antiarrhythmic Class IC
Flecainide and Propafenone
Is Flecainide taken orally or IV?
Both Class IC's (flecainide and propafenone) are taken orally
Both Class IC's (flecainide and propafenone) are contraindicated:
Post-MI - for patient's without structural abnormalities
Propafenone is just like Flecainide except:
Propafenone is also a beta blocker
Beta blockers are especially good at preventing arrhythmias triggered by:
Excess catacholamines
K Channel Blockers (Class III)
Amiodarone, Dronedarone, Sotalol, Ibutilide, Dofetilide
Amiodarone
K Channel Blockers (Class III) - blocks K, Na, weak Ca, alpha, and beta blocker - very lipid soluble
Dronedarone
K Channel Blockers (Class III)
Sotalol
K Channel Blockers (Class III) - Blocks K and non-selective beta blocker
Ibutilide
K Channel Blockers (Class III) - IV only
Dofetilide
K Channel Blockers (Class III)
Adverse effects include microdeposits in the cornea, photosensitivity, and bluish-gray coloration of the skin
Amiodarone (K Blocker - Class III)
Things to be on the look out for when taking Amiodarone
pulmonary fibrosis, hepatotoxicity, and hypo/hyperthyroidism
Why is Amiodarone so lipid soluble?
Amiodarone is 40% iodine by weight
The FDA requires that a medication guide be given to patients that are prescribed this:
Amiodarone
Dronedarone and Amiodarone are similar except that:
Dronedarone has no iodine - thus is potentially less toxic (still has black box warning)
Adverse effects of Sotalol
Torsades de pointes, excessive B-block (fatigue, sinus bradycardia, dyspnea)
Do you take Ibutilide orally or by IV?
By IV
Antiarrhythmic Calcium Channel blockers
(Class IV) - Verapamil and Diltiazem
Adenosine mechanism of action
Adenosine increases K out of the cell thus hyperpolarizing - also decreases Ca influx thus decreasing nodal conduction velocity and increasing refractoriness
What cardiac drugs are notable for causing AV block?
Adenosine, B-blocker, CCB, Digoxin
Is Adenosine given orally or by IV?
rapid IV bolus - half life of 10 seconds
Adenosine adverse effects:
Transient asystole, dyspnea (don't give to asthmatics), chest pain, facial flushing
Magnessium Sulfate
Effective in torsades de pointes and digoxin toxicity
Only effective with AV nodal reentry or WPW, not effective for atrial flutter/fibrillation, or ventricular tachycardia
Adenosine
Prevent arrhythmias triggered by excess catecholamines; reduces sudden cardiac death in post-MI patients
B-blockers (Class II)
Which arteries does cilostazol mainly vasodilate by increasing cAMP?
Femoral arteries
No limitation of physical activity. Ordinary physical activity does not cause undue dyspnea or fatigue, chest pain, or near syncope
Class I
Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity causes undue dyspnea or fatigue, chest pain, or near syncope.
Class II
Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes undue dyspnea or fatigue, chest pain, or near syncope.
Class III
Inability to carry out any physical activity without symptoms. Signs of right heart failure. Dyspnea and/or fatigue may be present even at rest. Discomfort is increased by any physical activity.
Class IV
Phosphodiesterase type III inhibitor
Cilostazol
First line drugs for Pulmonary Arterial Hypertension
Calcium Channel Blockers - first have to have the acute vasoreactivity test
What would be a postive acute vasoreactivity test?
A fall in mean pulmonary arterial pressure by 10; or a mPAP of less than 40 with unchanged or increased cardiac output
Adverse effects of Bosentan
Hepatotoxicity, anemia, possible teratogen, decrease concentration of some drugs such as hormonal contraceptives
Nonarteritic ischemic optic neuropathy (NAION)
Very rare adverse effect of Phosphodiesterase Type 5 inhibitors (afils)
An increase in preload with heart failure will do what?
Since the Frank-Starling curve is relatively flat in a patient with HF, an increase in preload will cause no further increase in CO but will exacerbate pulmonary edema
Drugs to use in someone with Stage A heart failure (high risk)
ACE Inhibitors
Drugs to use for someone with Stage B heart failure (no symptoms just structural)
ACE-I and B-blockers
Drugs to use for someone with Stage C heart failure (symptoms)
ACE-I, B-blockers, diuretic
Increased extracellular K will do what on Digoxin activity?
Reduce - Also Hypokalemia increase the toxicity of Digoxin
In Stage D of heart failure you want to increase myocardial contractility with these drugs:
Dobutamine, Dopamine, Phosphodiesterase Inhibitors (Inamrinone, Milrinone)
Drug useful in increasing the force of contraction without increasing HR - used in Stage D heart failure
Dobutamine
Adverse effect of Inamrinone (Phosphodiesterase inhibitor)
Thrombocytopenia