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63 Cards in this Set

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