Atrial Fibrillation

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PY365
Simeon Crane
Flashcards by Simeon Crane, updated more than 1 year ago
Simeon Crane
Created by Simeon Crane almost 6 years ago
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Resource summary

Question Answer
Combinations of calcium channel blockers and beta blockers can predispose patients to what kind of dysrhythmia? Heart Block
What type of dysrhthmia is Atrial Fibrillation? Re-entrant Rhythm
Name a therapeutic agent that is known to interfere with a digoxin assay? Aldosterone Antagonists
Name a Beta-blocker that exhibits class 3 pharmacological action? Sotalol
Which class of drugs are most likely to cause early after- depolarizations in ventricular myocytes? Potassium channel blockers
Name an antiarrhythmic that requires thyroid function testing before starting? Amiodarone
What is the name of the enzyme that converts T4 into T3 inside the target tissues? Iodothyronine deiodinase
What is a goitre? Large thyroid gland that is not producing thyroid hormones
What is Exophthalmos? Widening of the eyes
What is Exophthalmos caused by? Thyroid- stimulating immunoglobulin
Name a beta blocker that has class 3 antiarrhythmic properties. Sotalol
When can Bisoprolol be used for rhythm control? In a re-entrant rhythm that involves the AV node. (such as Wolff-Parkinson-White syndrome)
What are the 4 classes of drugs found in the Vaughan-Williams classification of Anti-arrhythmic drugs? 1- Sodium channel blockers 2- Beta blockers 3- Potassium channel blockers 4- Calcium channel blockers
What is the mechanism of action of Digoxin? Digoxin is a cardiac glycoside that increases the force of myocardial contraction and reduces conductivity within the atrioventricular (AV) node
What are the 7 components of the CHA(2)DS(2)-VASc score? C- Congestive HF H- Hypertension A- Age>75 D- Diabetes Mellitus S- Stroke V- Vascular disease A- Age 65-74 S- Sex(female)
What are the 7 components of the HAS-BLED score? H- Hypertension A- Abnormal renal and liver function S- Stroke B- Bleeding L- Labile INR E- Elderly D- Drugs or alcohol
What is the mechanism of action of Rivaroxaban? Rivaroxaban is a direct inhibitor of activated factor X (factor Xa)
What is the name of the study that showed apixaban was superior to warfarin in preventing stroke? ARISTOTLE
What is the best reason for why we conduct drug therapeutic monitoring? To monitor a drug with a narrow therapeutic range
What are the 4 most common biological sample processing strategies? - PPT (protein precipitation) - LLE (liquid liquid extraction) - SPE (solid phase extraction) - DAS (dilute and shoot)
What is the most commonly used immunoassay in DTM (drug therapeutic monitoring)? Enzyme-linked immunosorbant assay (ELISA)
What is the most common ECG characteristic of atrial fibrillation? Absent P waves
What is the normal resting heart rate for adults? 60 to 100 beats per minute
What is the mechanism of action of Beta Blockers in treating atrial fibrillation? They reduce automaticity and conduction through the AV node
What class of drug is Warfarin? Vitamin K antagonist
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