Arrhythmias

Question 1

What are the three most common reentry arrhythmias? Compare where the reentry circuit occurs

Answer 1

Atrial flutter - RA

AV node reentry tachycardia - Around the AV node

Ventricular tachycardia - In ventricle, around a scar

Question 2

How do you investigate an arrhythmia

Answer 2

ECG

Holter monitor, Implanted loop recorder

Echo

MRI

CT

Angiography

Stress testing

Question 3

In what location in the heart does the AF irregularity originate?

Answer 3

LA - around the entry points of the pulmonary veins

Question 4

Which structure determines the pulse rate in AF?

Answer 4

The AV node

Question 5

Which drugs are used to control rate in AF?

Answer 5

Beta-blocker - Atenolol

Calcium channel blocker - Verapamil

Digoxin

Question 6

What are some narrow complex tachycardias?

Answer 6

AF

SVT

Atrial flutter

Question 7

What are some wide complex tachycardias?

Answer 7

VT

Question 8

When might SVT have a wide complex?

Answer 8

When there is a preexisting BBB