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73 Cards in this Set
- Front
- Back
Nitroglycerin is a ______
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Vasodilator. relaxes vascular smooth muscles. Including dilation of the coronary arteries.
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metered dose of nitroglycerin is ___ per spray?
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0.4 mg
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Primary side effect of nitroglycerin
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hypotension
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contraindications of nitroglycerin
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viagra, inferior wall MI, ICP,
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Morphine is a ____?
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Narcotic opioid and an analgesic to reduce the perception of pain.
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Dose of morphine is _____?
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2 to 4mg SLOW
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Contraindications of morphine are:
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Respiratory depression,
CNS depression (head injury) Increased ICP Asthma abdominal pain |
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morphine dose?
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0.4 to 2 mg up to 10mg
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Do not use adenosine on _____?
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2nd or 3rd degree heart blocks
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Amiodrone is a _____?
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class III antiarrhythmic. but stimulates all 4 classes.
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The 6 classes of antiarrhythmics are?
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1A, 1B, 1C, II, III, IV
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class 1A antiarrhythmics major action.
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Blocks fast sodium channels.
Prolongs repolariation decreases exciteability |
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Class 1B antiarrhythmics major action.
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Blocks fast sodium channels
shortens repolarization decreases excitability |
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Class 1C antiarrhythmics major action.
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Profoundly slows conduction
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Class II antiarrhythmics major action.
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Beta-Blocker
suppresses automaticity slows the rate of impulse conduction |
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Class III antiarrhythmics major action.
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prolongs repolarization by interfering with potassium
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Class IV antiarrhythmics major action
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CCB
slows impulse conduction and contraction. By blocking the movement of calcium. |
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Amiodarone does what?
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Slows conduction through the purkinje.
lengthens action potential throughout the heart. prolongs repolarization Blocks potassium and calcium |
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Amiodarone causes vaso______?
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vasodilator
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Amiodarone increases cardiac output by _____?
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decreasing afterload
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Contraindications of amiodorone?
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Bradycardias
2nd and 3rd AV block |
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Atropine's mechanism of action in the heart?
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Increases heart rate
blocks vagus nerve Increases conduction velocity |
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Atropine's mechanism of action in the respiratory system.
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Relaxes bronchial smooth muscle
decreases body secretions. |
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Medications ending in lol are?
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Beta-blockers
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Beta-blockers mechanism of action?
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slows heart rate
reduces BP reduces dysrhythmias by decreasing catecholamine levels. |
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Contraindicatrors of beta-blockers
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Heart rate <60
BP <100 2nd or 3rd av block poor peripheral perfusion |
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Epinephrine stimulates _______?
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Alpha, Beta1 and Beta 2
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Epinephrines alpha agonists does what?
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increases vascular resistance
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Epinephrines Beta 1 agonists do this
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increases force of contractions
increases heart rate But also increases O2 demands and workload. |
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Epinephrines Beta 2 agonists do this?
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relaxes bronchial smooth muscle
dilates cerebral, pulmonary, coronary and hepatic vessels. |
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Use epinephrine for Cardiac _____?
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arrest,
V-fib pulseles V-tach asystole PEA Bradycardia |
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Lidocaine is an __ antiarrhythmic
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class 1b (Blocks fast sodium channels)
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Use lidocaine after _____?
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pulseles VT/VF after defibrillation and vasopressors.
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In a bradycardia with a ventricular escape _____ may be lethal.
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Lidocaine
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Dose of Lidocaine?
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1 mg up to 3x
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Magnesium sulfate does what?
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Slows the rate of SA node impulse
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Magnesium sulfate dose?
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1 to 2 g in 10 mL NS
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If you have A-fib with a rapid ventricular response, how would you mix your Magnesium sulfate?
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1 to 2 g in 100 ml D5W over 60 min
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Contraindications of Magnesium sulfate?
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Respiratory depression
Hypocalcema Hypermagnesium |
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The antidote for Magnesium sulfate is?
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Calcium
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Procainamide is classified as?
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a Ia antiarrhythmic (blocks fast sodium channels)
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Mechanism of action of Procainamide?
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Decreases conduction velocity in the atria, ventricles and purkinje.
Prolongs PR and QT intervals Causes peripheral dilation |
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Use procainamide for?
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VT in pt with no sign of heart failure.
Or pt with A-fib or A-flutter with WPW. Can use in SVT if vagal manuvers or adenosine does not work. |
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Dose of procainamide?
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20 mg/min until dysrhythmia resolves, Hypotension occurs or a wide QRS.
Can use in SVT if vagal manuvers or adenosine does not work. |
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Contraindiations of procainamide?
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complete AV block (if no pacemaker)
Pt with prolonged QRS and QT intervals Or Digitalis toxicity |
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Calcium chloride is a ?
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electrolyte, calcium salt
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Mechanism of action for calcium chloride?
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increases cardiac contraction (+ inotropic) helps coagulate blood
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Indications for calcium chloride?
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HyperKalemia
HypoCalcemia calcium channel blocker overdose Magnesium toxicity |
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Dosing for calcium chloride.
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500 to 1000 mg (5 to 10 ml) over 2 to 5 min
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Contraindications of calcium chloride?
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V-fib
kidney stones |
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Dobutamine dosing?
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2 to 20 mcg/kg/min continuous infusion
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Mechanism of action of dobutamine?
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Stimulates Alpha, beta1 and beta 2.
potent inotropic effect. Increases: contractility, stroke volume, and cardiac output. minimal alpha effects |
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Use dobutamine for?
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cardiac decompensation due to depressed contractility. ie: CHF, pulmonary congestion.
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Contraindications of dobutamine.
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Tachydysrhythmias
severe hypotension aortic stenosis |
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Dobutamine is classified as a?
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sympathomimetic
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dopamine is classified as a?
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sympathomimetic / vasopressor / cardiac stimulant
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mechanism of action in dopamine?
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effects change with increasing doses
Stimulates dopeaminergic, beta, alpha andrenergic, |
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dose for low dose dopamine?
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0.5 to 2 mcg/kg/min
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dose for medium dose dopamine
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2 to 10 mg/kg/min
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Dose for high dose dopamine?
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10 to 20 mcg/kg/min
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low dose dopamine does what?
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dilation of the renal coronary and intracerebral vascular beds
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Medium dose dopamine does what?
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Acts on beta 1 resulting in improved myocardial contractility. increased SA rate and impulse conduction.
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High dose of dopamine does what?
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A1, A2 = BP and systemic vascular resistance increase.
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Contraindications of dopamine?
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hypovolemia,
Tachydysrhythmias V-fib MAOI's hypersensivity to sulfates |
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Vasopressin is classified as a ?
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hormone / antidiuretic
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Mechanism of action for vasopressin
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causes constriction of peripheral, cerebral, pulmonary and coronary vessels.
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Dose of vasopressin?
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40 units one time.
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Contraindications of vasopressin
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hypersensivity
coronary artery or peripheral artery disease. |
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Sodium bicarb is classified as a ?
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alkalinizing agent, antacid, electrolyte.
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Mechanism of sodium bicarb?
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buffers hydrogen ions.
Raises blood PH reverses acidosis |
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Indications of sodium bicarb
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hyperkalemia
metabolic acidosis overdoses of tricyclic antidepressants and procainamide |
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Dose of sodium bicarb?
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1 mEq/kg
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contraindications of sodium bicarb?
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severe pulmonary edema
alkalosis |