Antiarrhythmics

Question 1

arrhythmias

Answer 1

abnormal heartbeats and sinus rhythm

Question 2

generates impulse
(action potential) and delivers it to the atria and the AV node

Answer 2

SA node

Question 3

delivers the impulse to purkinje fibers

Answer 3

AV node

Question 4

conducts the impulse to the ventricles

Answer 4

purkinje fibers

Question 5

what is the pacemaker of the heart?

Answer 5

SA node

Question 6

what is the pacesetter of the heart?

Answer 6

AV node

Question 7

SA node stands for

Answer 7

sinoatrial node

Question 8

AV node stands for

Answer 8

atrioventricular node

Question 9

HR less than 60 bpm

Answer 9

bradycardia

Question 10

HR greater than 60 bpm

Answer 10

tachycardia

Question 11

normal resting HR

Answer 11

60-80 bpm

Question 12

arrhythmias are caused by a disruption in

Answer 12

Cardiac Electrical Conduction

Question 13

if the arrhythmia arises from Atria, SA node, or AV node it is called ________ arrhythmia (upper chamber)

Answer 13

supraventricular

Question 14

if the arrhythmia arises from the ventricles it is called ________ arrhythmia (lower chamber)

Answer 14

ventricular

Question 15

causes of arrhythmia

Answer 15

• arteriosclerosis
• coronary artery spasm
• heart block
• myocardial ischemia

Question 16

T/F Wolff-Parkinson-White, ectopic signal (e.g. caffeine), hERG blockade and QT prolongation causes disruption in the heart’s electrical system

Answer 16

true

Question 17

electrical impulse =

Answer 17

action potential