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101 Cards in this Set
- Front
- Back
What is the tx for African Trypanosomiasis (aka African Sleeping Sickness)?
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Suramin
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What is the tx for Chagas?
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Nifurtimox
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What is the tx for PCP?
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1st: TMP/SMX
2nd: Aerosolized Pentamidine 3rd: Dapsone NOTE: PCP = PneumoCystis Pneumonia BUG: Pneumocystis Jiroveci (formerly Pneumocystis Carinii) |
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What is the SE of Aerosolized Pentamidine?
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Drug-induced pancreatitis
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What is the tx for Entamoeba Histolytica?
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Metronidazole
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What is the tx for P. vivax?
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Primaquine for latent P. vivax & P. ovale to prevent relapse (otherwise tx = Chloroquine)
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How do you tx a patient with Malaria who has just returned from New Dehli?
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Methloquine; Malaria from the indian subcontinent/subsahara is assumed to be resistent to Chloraquine
NOTE: New Dehli is the capital of the Republic of India |
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What is the tx for "Kala-azar"?
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Pentavir Antimony
Na+ Stipigluconate NOTE: Kala-azar (aka Dumdum Fever) is Visceral Leishmaniasis, the most severe form of Leishmaniasis |
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What is the tx for Taenia Solium?
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Niclosamide
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What is the tx for Clonorchis Sinensis?
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Praziquental
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What is the tx for Enterobius Vermacularis?
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Praziquental & Mebendazole (on day 11 he says Pyrantal Pamoate & Mebendazole)
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What is the tx for Onchocerca (River Blindness)?
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Ivermectin
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What are the Neuroleptics?
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Fluphenazine
Thioridazine Haloperidol Chlorpromazine Promazine |
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What is the tx for Tourette's?
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Olanzapine
Promazine |
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What is the MOA of Quetiapine?
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Quetiapine = Atypical Neuroleptic
Block 5-HT-2 & D2 receptors |
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What drug blocks 5-HT-1D receptors?
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Nothing, h/w Sumitriptan is a 5-HT-1D AGONIST
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What drug blocks 5-HT-2, 5-HT-3, & a2 receptors?
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Mirtazipine
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What drug blocks 5-HT-3 receptors only?
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Ondansetron
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What is/are the SE(s) of Quetiapine?
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Cataracts
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What drug has a SE profile of Pigmented Retinopathy?
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Thioridazine
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What is/are the SE(s) of Fluphenazine?
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Hyperthermia due to disruption of the thermo-regulatory center
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What is the DOC for OCD?
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Paroxetine
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What is the MOA of Clomipramine?
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TCA's: Block 5-HT & NE re-uptake
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What drugs block [only?] NE re-uptake?
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Cocaine
TCA's Maprotiline |
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What heterocyclic inhibits only 5-HT re-uptake?
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Trazadone
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What is the DOC for Generalized Anxiety in a pt who is an alcoholic?
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Busparone
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What is the MOA of Phenalzine?
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Non-selective MAO inhibitor
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What is/are the SE(s) of Chlortinidine?
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*Hyper-GLUC:
HyperGlycemia HyperLipidemia HyperUricemia HyperCalcemia |
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What are the 4 main Thiazide Diuretics?
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Hydrochlorothiazide
Indapamide Metolazone Chlortinidine |
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What is/are the SE(s) of Quinidine?
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Severe rebound HTN
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What is/are the SE(s) of Methyldopa?
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Positive Coomb's Test
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What is/are the SE(s) of Hexamethonium?
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Sympatholytic
Severe orthostatic Hypotension Sexual Dysfunction Parasympatholytic Constipation Blurred Vision |
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What is/are the SE(s) of Reserpine?
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Depression
Diarrhea |
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What is/are the SE(s) of Guanethidine?
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Sexual Dysfunction
Diarrhea |
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What is/are the SE(s) of Prazosin?
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1st-dose Orthostatic Hypotension
Priapism |
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What is/are the SE(s) of B-Blockers?
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Impotence
Exacerbates asthma Masks hypoglycemia in DM Cardiovascular efffects (bradycardia, AV block, CHF) CNS effects (sedation, sleep alteration) |
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What is/are the SE(s) of Hydralazine?
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*SARS
Salt retention Angina Reflex tachycardia SLE-like sx's |
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What is/are the SE(s) of Minoxidil (OTC Rogaine)?
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*SHARP
Salt retention Hypertrichosis (too much hair) Angina Reflex tachycardia Pericardial effusion |
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What is/are the SE(s) of Verapimil?
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Constipation
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What is/are the SE(s) of Captopril?
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*CHAPTOPRIL where ""H"" = Hyperkalemia
C = Cough H = Hyperkalemia A = Angioedema P = Proteinuria T = Taste change O = HypOtension P = Pregnancy problems (fetal renal ?) R = Rash I = Incr'd renin L = Lowers Ang II |
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DAY 7:
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What happens to EDV when Nitrates are given?
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Decreased
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What happens to BP when Nitrates are given?
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Decreased
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What happens to Contractility when Nitrates are given?
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Reflexively Increased
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What happens to HR when Nitrates are given?
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Reflexively Increased (reflex tachycardia)
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What happens to Ejection time when Nitrates are given?
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Decreased
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What happens to MVO2 when Nitrates are given?
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Decreased
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What happens to EDV when B-Blockers are given?
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Increased (incr'd time in diastole = incr'd filling time)
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What happens to BP when B-Blockers are given?
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Decreased
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What happens to Contractility when B-Blockers are given?
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Decreased
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What happens to HR when B-Blockers are given?
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Decreased
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What happens to Ejection Time when B-Blockers are given?
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Increased
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What happens to MVO2 when B-Blockers are given?
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Decreased
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What happens to EDV when Nitrates AND B-Blockers are given?
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No change
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What happens to BP when Nitrates AND B-Blockers are given?
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Decreased
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What happens to Contractility when Nitrates AND B-Blockers are given?
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Decreased
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What happens to HR when Nitrates AND B-Blockers are given?
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Decreased (b/c B-Blockers = direct response, while Nitrates = reflexive response)
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What happens to Ejection Time when Nitrates AND B-Blockers are given?
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No change
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What happens to MVO2 when Nitrates AND B-Blockers are given?
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Decreased
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What is the 1st line tx for Cocaine-related MI?
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Benzodiazepines to tx HTN
Nitrates to tx VC/Vasospasm Aspirin to decrease thrombus formation |
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What is the tx for symptomatic premature atrial contraction?
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B-Blockers
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What is the Na+, K+, & Ca2+ ion normal physiology of the heart?
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1) The Na+/K+ pump exchanges 3K+ (moves inward) for 2Na+ (moves outward)
2) The Na+/Ca2+ antiporter exchanges Na+ (moves inward) for Ca2+ (moves outward) 3) K+ leak channels slowly allow K+ to diffuse (moves outward) to be used again by the Na+/K+ pump (exchanger) 3) If the resting membrane potential reaches threshhold (approx +90mv) an AP occurs |
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What is the MOA and physiology leading to the effects of Digoxin?
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1) Digoxin binds the K+ on the Na+/K+ pump preventing Na+/K+ exchange; K+ therefore stays outside the cell while Na+ stays inside the cell;
2) Na+ is then no longer exchanged with Ca2+; Ca2+ accumulates inside the cell; 3) Once threshhold is finally reached and an action potential does occur, the accumulated Ca2+ is released; release of an increased amount of Ca2+ results in an increased ionotropic effect (i.e. increased contractility due to increased ""ions"", Ca2+ in this case) |
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What is the c/u and rationale for Digoxin?
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CHF b/c increases contractility
Atrial Fibrillation b/c slows conduction @ AV node leading to accumulation of intracellular Na+ which causes ventricles to contract harder (ventricular contractio is due to Na+) |
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What is the toxicity of Digoxin?
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Torsades De Pointes Arrhythmia (i.e. prolonged QT) b/c of its effects on K+
Yellow vision |
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What is the tx for Digoxin toxicity?
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1) STOP DIGOXIN ADMINISTRATION!
2) Slowly normalize K+ 3) Lidocaine 4) Mg2+ 5) Digifab/Digibind 6) Pacemaker once stable (~2wks later) |
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What effects does Digoxin have on the EKG?
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Decr'd Na+/K+ Pump action --> Incr'd intracellular CA2+ accumulation:
PR Interval: Increased QT Interval: Decreased ST segment: Depression T wave: Inversion (i.e. U wave) |
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What are the Class III anti-arrhythmics?
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Ibutilide
Sotalol Bretylium Amiodarone Dofetilide |
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What is the MOA and effects of Class III Anti-arrhythmics?
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Blocks K+ leading to:
AP duration: Increased QT interval: Increased (repolarization requires K+) ERP: Increased (b/c blocked K+) |
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What is the break-down metabolite of Amiodarone?
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Procainamide
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What class of Anti-Arrhythmic is Procainamide?
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Class IA
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Why is Amiodarone listed as a Class IA AND Class III anti-arrhythmic?
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Class IA: Amiodarone's metabolite, Procainamide, is a Class IA
Class III: Amiodarone's MOA is to block K+ |
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What is the MOA & effects of Class IA Anti-arrhythmics?
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Blocks Na+ AND K+ Channels leading to:
AP duration: Increased QT interval: Increased (repolarization requires K+) ERP: Increased (b/c blocked K+) |
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What are the Class IB Anti-arrhythmics?
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Lidocaine
Mexlotine Tocanimide Phenytoin |
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What is the c/u for Phenytoin?
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Treatment: Tonic-clonic seizures
Phrophylaxis: Status-epilepticus seizures |
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What is the MOA of Phenytoin?
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Blocks Na+ channels
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What is the MOA and effects of Class IB Anti-arrhythmics?
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Blocks Na+ (does NOT affect K+ channels):
AP duration: Decreased QT interval: No change (repolarization requires K+ and there is no change in K+) ERP: No change (b/c no change in K+) |
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What is the c/u for Class IB Anti-arrhythmics?
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1) Post-MI Ventricular Arrhythmias
2) Lidicaine: 3rd step in tx for digioxin toxicity |
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What is the toxicity of Lidicaine?
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ASYSTOLE --> DEATH
(MOA = blocks Na+ Channels in the heart) |
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What drugs tx Ventricular Arrhythmias and what is the rationale for their use?
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Class IB Anti-arrhythmics:
Decreased AP = decreased work by the heart Class III Anti-arrhythmics: K+ is blocked, thereby slowing repolarization at the AV Node (i.e. less ventricular firing) |
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What is the rationale for whether or not to use Digoxin for the tx of Ventricular Arrhythmias?
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Digoxin could be used, but you do NOT want to make the heart contract harder. Therefore, Digixin is not used in the tx of Ventricular Arrhythmias
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What are the Class IC drugs?
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Cainide
Flecainide Propafenone |
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What are the indications for Class IC Anti-arrhythmics?
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When everything else fails!
Ventricular Tachycardia becomes Ventricutlar Fibrillation Intractable SVT |
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What is the DOC for SVT?
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DOC: Adenosine
2nd Line: Verapamil |
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What is the MOA of Adenosine?
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Opens Ca2+ channels: decr'd Ca2+
Opens K+ channels: incr'd K+ (repolarization --> ""hyperpolarizes"" AV node) |
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Why are Class IC Anti-arrhythmics ONLY given for INTRACTABLE SVT?
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Class IC Anti-arrhythmics block Na+ channels EVERYWHERE!!
The heart has once chance to ""fire"" & then it will not ""fire"" again (b/c Na+ is blocked) |
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What is the MOA and effects of Class IC Anti-arrhythmics?
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Class IC Anti-arrhythmics block Na+ channels EVERYWHERE!!
AP duration: no more AP's after ""first fire"" QT interval: No change (repolarization requires K+ and there is no change in K+) ERP: No change (b/c no change in K+) |
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Why do we use Class IC Anti-arrhythmics, if they are a "last resort"?
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Toxicity = ""PRO-ARRHYTHMIA""
Any arrhythmia is better than NO arrhythmia at all (i.e. flutter or flatline) e.g. working on pt for 20 mins & still no HR |
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What is the MOA of Class II Anti-arrhythmics?
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Class II = B-Blockers:
Decr'd HR Decr'd Contractility Decr'd AV node conduction |
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What is the phsyiological bases for why Class II Anti-arrhythmics cause decr'd HR?
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Class II = B-Blockers:
Beta receptors are blocked --> decr'd stimulation of Gs proteins --> decr'd AC --> decr'd cAMP --> decr'd PKA --> decr'd SS outflow --> decr'd HR (NOTE: Step 1 may ask which of the following is affected with B-Blocker tx & the correct answer will be one of the steps in the pathway) |
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Which B-Blockers have intrinsic sympathomimetic activity
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B-Blockers that ""partially"" block beta receptors AND are also a-agonists (incr'd SS's):
Oxprenolol Acebutolol Pindolol Penbutolol |
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What is the toxicity of Amiodarone?
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Hepatotoxicity
Corneal deposits Photodermatitis |
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What is the MOA of Class IV Anti-arrhythmics?
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Class IV = Cardio-selective CCB's:
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What are the Class IV Anti-arrhythmics?
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Verapimil
Diltiazam |
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Why aren't Nefidapine and Amlodipine Class IV Anti-arrhythmics?
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Though they are CCB's, they are NON-CARDIO selective (they don't affect the heart)
NOTE: These will be ""distractors"" on Step 1 |
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Where do Class IV Anti-arrhythmics work?
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AV Node
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What node controls atrial contraction?
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SA Node
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Which node controls ventricular contraction?
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AV Node
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What is the c/u for Class IV Anti-arrhythmics?
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SVT b/c AV node is just above (i.e. "supra") the ventricle
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What is the Na+, K+, & Ca2+ ion normal physiology of the heart?
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1) The Na+/K+ pump exchanges 3K+ (moves inward) for 2Na+ (moves outward)
2) The Na+/Ca2+ antiporter exchanges 2Na+ (moves inward) for Ca2+ (moves outward) 3) K+ leak channels slowly allow K+ to diffuse (moves outward) to be used again by the Na+/K+ pump (exchanger) 3) If the resting membrane potential reaches threshhold (approx +90mv) an AP occurs |
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What is the MOA and c/u of Adenosine?
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Opens Ca2+ channels: decr'd Ca2+
Opens K+ [leak] channels: incr'd K+ (repolarization --> ""hyperpolarizes"" AV node) Clinical use: ventricular arrhythmias (b/c it hyperpolarizes the AV node) |