Studydroid is shutting down on January 1st, 2019
Cloned from: Anti-Arrhythmics

by msisk


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Class 1A
Procainamide, Disopyramide, Quinidine
Class 1B
Lidocaine, Mexilitine, Tocainide, Phenytoin
Class 1C
Flecainide, Morcizine, Propafenone
Class 2
Propanolol Metoprolol
Class 3
Amiodarone, Bretylium, Sotalol, Ibutilide, Dofetilide
Amiodarone dosing
LD: 150mg IV bolus over 10min M: 1mg/min for 6 hours, then 0.5mg/min for 18 hours
Ibutilide dosing
< 60kg: 0.01 mg/kg IV over 10min > 60kg: 1mg IV over 10min (Check electrolytes)
Dofetilide dosing
TIPS: 500mcg po BID CrCl (mL/min): 40-60 = 250mcg 20-39 = 125mcg < 20 = contraindicated
Amiodarone SEs
Hyper/Hypothyroid, requires annual exam, Liver (increased LFTs) Pulmonary Fibrosis, blue/gray
Class 4
Diltiazem, Verapamil (avoid in HF, may ppt HF) (withold dose if SBP < 90 or DBP < 60)
Verapamil may increase serum conc. of...
Digoxin
Adenosine
t1/2 = 10sec dose: 6mg IVP, may repeat with 12mg x 2 (3 doses only) Give double the bolus dose if no central line avail.
Digoxin
LD: 1mg, then 0.25mg/day
Adenosine SEs
Feeling of impending doom, asystole
Electrolytes to monitor with Digoxin
K, Mg, Serum Dig level, Ca also...
A Fib Rate Control
Torsade de Pointes Characteristic EKG? Causes?
prolonged QT interval DI's including: Clarithromycin, Erythromycin, Bactrim
Torsade de Pointes TXMT
1st line: Mg 1-2 grams IVP 2nd line: Transvenous Pacing (105-120bpm) if Mg doesnt work Must correct electrolyte imbalance DCC: if necessary
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