Flashcards in Exam 1 ECGs Deck (12)
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1
Two generic ways to stop a tachyarrhythmia?
1) suppress depolarization
2) prolong repolarization
2
Which class of antiarrhythmias is not effective against ventricular tachycardias?
Class IV (Ca channel blockers)
3
For which species will a class I (Na channel blocker) antiarrhythmic help treat supraventricular tachycardias?
horse (will not work for dogs)
4
Name 2 Class Ia antiarrhythmics
Quinidine
Procainamide
5
Name 2 (one oral, one IV) class Ib antiarrhythmics
IV--Lidocaine
PO--Mexiletine
6
Name 2 (one oral, one IV) class II antiarrhythmics
Atenolol (IV)
Esmolol (PO)
7
Name 2 class III antiarrhythmics
Amiodarone (last choice...blocks ALL channels)
Sotalol (also beta-blocker)
8
Name a class IV antiarrhythmic
Diltiazem
9
Name one injectable and 2 oral medications that can be used to treat Vtach
IV--Lidocaine
Oral--Sotalol, Mexiletine
10
Name 1 injectable and 3 oral meds that can be used to treat atrial fibrilation
IV--Diltiazem
Oral-- Diltiazem, Sotalol, Digoxin
11
3 ECG changes expected with hyperkalemia?
1) loss of p waves
2) taller T wave
3) increased QRS width
12
