Specific Clinical Applications

Question 0

Supra ventricular Tach (SVT): Atrial, AV node reentry circuit

Answer 0

VERAPAMIL and other AV depressants

Question 1

Atrial Flutter

Answer 1

AV depression, protect the ventricle with DIGOXIN, VERAPAMIL, BETA BLOCKERS
CLASS IA suppress Na driven ectopic focus

Question 2

Supra ventricular tach (SVT): atrial wall reentry

Answer 2

CLASS IA (Quinidine) --> inhibit initiation of action
CLASS III (Amiodarone) --> inc refractoriness

Question 3

VT

Answer 3

Caused by repeated ectopic depol / reentry circ 
Na driven --> LIDOCAINE or other class I or III

Question 4

VF

Answer 4

CARDIOVERSION, CLASS IB, IA OR III

Question 5

Digitalis-induced arrhythmias

Answer 5

Extrasystoles or Vtach (ESP with diuretics and HYPOkalemia) + AV nodal depression (ESP with Verapamil, Propanolol and Adenosine, and HYPERkalemia)
CLASS IB: no AV depression, PHENYTOIN inc AV conduction
PROCAINAMIDE