Re-entrant Rhythms

Question 1

What does a re-entrant rhythm cause

Answer 1

Causes atria/ventricular tachycardia and can degenerate to cause fibrillation

Question 2

Name the types of Re-entrant rhythms

Answer 2

1. Sinus node re-entrant tachycardia (SNRT)
2. AV nodal re-entrant tachycardia (AVNRT)
3. Atrial re-entrant tachycardia
4. Atrioventricular re-entrant tachycardia (AVRT)
5. Atrial flutter
6. AF

Question 3

What is SNRT

Answer 3

where the re-entrant circuit involves sinus node

Question 4

What is AVNRT

Answer 4

re-entrant circuit involves AV node

Question 5

What is atrial re-entrant tachycardia

Answer 5

where the re-entrant circuit is contained within the atria

Question 6

What is atrioventricular re-entrant tachycardia

Answer 6

where the re-entrant circuit contains an electrical connection between the atria and ventricles
- there are several varieties of bypass tract (electrical connection) re-entrant tachycardia
- most well known is Wolff Parkinson syndrome

Question 7

What is atrial flutter

Answer 7

special type of atrial re-entrant tachycardia in which the re-entrant circuit is especially large

Question 8

What is AF in regards to re-entrant rhythms

Answer 8

generally regarded as a special type of re-entrant atrial tachycardia in which multiple re-entrant circuits can develop within the atria

Question 9

Is a re-entrant rhythm continuous

Answer 9

For many, the re-entrant rhythm starts and stops instantaneously