Cardiac Arrhythmia Drugs (M2)

Question 1

What are treatments for arrhythmias that are not drugs?

Answer 1

1. pacemakers
2. implant cardioverter-defibrillator (ICD)
3. cardioversion

Question 2

What is the specialized muscle that is located in the posterior wall of the right atrium beneath and medial tot he opening of the superior vena cava? 1. What does this tissue do? 2

Answer 2

1. sinoatrial node

2. controls rate of beat of heart

Question 3

Is conduction in the atrioventricular node fast or slow?

Answer 3

slow

Question 4

What is the time between when channels are inactivated and can open to permit another response to a stimulus?

Answer 4

refractory period

Question 5

What is it called if the firing rate is determined by some other place in the heart? 1. What is it called if it is in the atria? 2. In the ventricles? 3

Answer 5

1. ectopic focus
2. supraventricular arrhythmia
3. ventricular arrhythmia

Question 6

What is it called if an impulse reenters and excites areas of the heart more than once?

Answer 6

reentry

Question 7

Are surgical or anti-arrhythmia drugs preferred treatment?

Answer 7

surgical (pacemaker)