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63 Cards in this Set
- Front
- Back
normal heart rate per minute?
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60-100 bpm
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normal sinus rhythm PR time?
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0.20 sec
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normal sinus rhythm QRS time?
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0.12 sec
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normal sinus rhythm QT time?
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0.44 sec
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A fib rate?
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atrial 300-600 bpm, ventricular 120-180bpm
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What can cause slow conduction through the AV node?
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digoxin, BB, CCB, people with AV nodal disease
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physical exam diag (not ecg) of a fib?
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fast heart rate without a correlation between auscultated apical heart rate and palpated wrist heart rate
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ECG results for a fib for P wave?
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400 to 600 bpm
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ECG results for a fib for QRS?
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100-160 bpm
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ECG results for a fib for rhythm?
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irregular
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ECG results for a fib for morphology?
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baseline undulation (wavy appearance), no P waves, QRS normal
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age group of highest incidence of a fib in US?
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>80
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incidence of a fib in caucasians vs AAs?
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AF x2 in caucasians compared to AAs
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Marshfield Clinic epidemiologic study?
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at 4 yrs, 2.4x risk of death in pts with a fib or a flutter
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EKG saw blade appearance =?
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atrial flutter
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Structural causes of a fib?
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rheumatic valvular disease, mitral stenosis
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clinical causes of a fib?
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htn, atherosclerosis, CHF, DM, pulmonary disease, cardiothoracic surgery, hyperthyroidism, age
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Modifiable risk factors for a fib?
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smoking, alcohol
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emerging risk factors for a fib?
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psych stress, elevated c-reactive protein, tall, metabolic syndrome/obesity, genetic predisposition
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What is lone AF?
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a fib without structural heart disease or any described factors
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ECG results for a fib for morphology?
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baseline undulation (wavy appearance), no P waves, QRS normal
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age group of highest incidence of a fib in US?
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>80
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incidence of a fib in caucasians vs AAs?
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AF x2 in caucasians compared to AAs
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Marshfield Clinic epidemiologic study?
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at 4 yrs, 2.4x risk of death in pts with a fib or a flutter
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EKG saw blade appearance =?
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atrial flutter
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Structural causes of a fib?
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rheumatic valvular disease, mitral stenosis
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clinical causes of a fib?
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htn, atherosclerosis, CHF, DM, pulmonary disease, cardiothoracic surgery, hyperthyroidism, age
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Modifiable risk factors for a fib?
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smoking, alcohol
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emerging risk factors for a fib?
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psych stress, elevated c-reactive protein, tall, metabolic syndrome/obesity, genetic predisposition
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What is lone AF?
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a fib without structural heart disease or any described factors
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ECG results for a fib for morphology?
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baseline undulation (wavy appearance), no P waves, QRS normal
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age group of highest incidence of a fib in US?
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>80
|
|
incidence of a fib in caucasians vs AAs?
|
AF x2 in caucasians compared to AAs
|
|
Marshfield Clinic epidemiologic study?
|
at 4 yrs, 2.4x risk of death in pts with a fib or a flutter
|
|
EKG saw blade appearance =?
|
atrial flutter
|
|
Structural causes of a fib?
|
rheumatic valvular disease, mitral stenosis
|
|
clinical causes of a fib?
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htn, atherosclerosis, CHF, DM, pulmonary disease, cardiothoracic surgery, hyperthyroidism, age
|
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Modifiable risk factors for a fib?
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smoking, alcohol
|
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emerging risk factors for a fib?
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psych stress, elevated c-reactive protein, tall, metabolic syndrome/obesity, genetic predisposition
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What is lone AF?
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a fib without structural heart disease or any described factors
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What is silent AF?
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nonpharmacological conversion = cardioverters, pacemakers, catheter ablation, pharmacological converison; usually in pts >65
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In a fib, what is the hemodynamic compromise consist of?
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ejection fraction < 25%, reduced filling time and volume, oxygen delivery, and waste removal
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Potential AF complications?
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thromboembolic strokes (framingham study) and CHF (manitoba and renfrew studies)
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Goals in management of AF?
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control HR, convert to sinus rhythm, prevent reoccurences and complications, QOL
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Antiarrythmic drugs Vaughan-William classification I?
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na channel blocking agents
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Antiarrythmic drugs Vaughan-William classification II?
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BB
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Antiarrythmic drugs Vaughan-William classification III?
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K channel blocking agents
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Antiarrythmic drugs Vaughan-William classification IV?
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CCB
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According to Race II, what were the results?
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lenient rate control is non-inferior to strict rate control in a fib pts
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What were the results of Atrial fibrillation and congestive heart failure trial?
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rate control > rhythm control in outcomes
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Non-pharmacological management of AF?
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cardioversion, pace-maker, cardioverter implants, catheter ablation, maze surgery
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Types of cardioversion?
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electrical (dc current 50-100J) or pharmacological
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What are the pharmacological types of cardioconversion?
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-(type Ia)digoxin 0.25mg IV q6h to total dose of 1mg then procainamide po
-(type III) sotalol, amiodarone, ibutilide, dofetilide |
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Outcome of RE-LY study?
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dabigatran approved for prevention of stroke or systemic embolism in pts with AF
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Dosing of dabigatran in AF pts?
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150mg bid or 75mg bid in pts with crcl 15-30ml/min
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Dosing for ibutilide in rhythm control?
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-<60kg = 0.01mg/kg over 10 min
->=60kg = 1mg over 10 min -can do second dose if 1st not worked -ecg monitor x 4h -feeling of death and flatten ecg after infusion -drug drug interaction with QT prolong drugs |
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Dosing for dofetilide?
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0.25-1mg po qd;
-crck >60ml/min 500mcg bid - 40-60 = 250mcg bid - 20-39 = 125mcg bid - <20 = NO |
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QT contraindication for dofetilide?
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if greater than 440ms or 500ms for pts with conduction abnormalities
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Dosing of dronedarone?
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400mg bid with meals
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Contraindications of dronedarone?
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NYHA IV (EF <35%) or decompensated CHF in past 4 weeks
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MOA of dronedarone?
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sympatholytic, inhibits l-type Ca current, inward NA current and multiple K currents
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Drug drug interactions of dronedarone (multaq)?
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increase dig levels
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Economic burden of AF?
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6.65 billion for tx / yr
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