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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

Primary cause of left anterior fasicular block?

Left ventricle concentric hypertrophy