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