UNIT 2 Dysrhythmias Drug Therapy

Question 1

class I antidysrhythmics that is a sodium channel blockers that are used to decrease automaticity (generate electrical impulses)

Answer 1

Disopramide (Norpace)

- watch for decreased blood pressur

Question 2

class I antidysrhythmics that shorten repolarization.
- used to treat ventricular fibrillation and ventricular tachycardia

Answer 2

Lidocaine

Question 3

class II antidysrhytmics: beta blockers which decrease heart rate and conduction velocity.

• watch for decreased heart rate and BP, wheezing/Shob.
• do not discontinue abruptly

Answer 3

Propanolol, esmolol (suffix is -olol)

Question 4

class IV antidysrhythmics that are calcium channel blockers.
- watch for bradycardia, hypotension, and dizziness

Answer 4

Verapamil (Calan), Dilitazem (Cardizem)

suffix is “-pine” and “-amil”

Question 5

Class III antidysrhythmis that lengthen the refractory period.

• can cause irritation to peripheral veins
• used to treat PVC(s), ventricular tachycardia and ventricular fibrillation with a pulse.

Answer 5

Amiodarone

Question 6

makes the heart stop for about 10-30 seconds and restart at a more favorable bpm.

• used to treat supraventricular tachycardia
• physician must be present to be given
• patient must be on a monitor
• It’s vital to provide education to the patient about what to expect during their experience
• be sure to provide SUPPORT

Answer 6

Adenosine

Question 7

increases the heart rate and improves the atrioventricular conduction by blocking the parasympathetic influences on the heart. given in a dose at or between 0.5 to 1 mg. used to treat sinus bradycardia.
- used to treat sinus bradycardia

Answer 7

atropine