Reentrant Junctional Tachyarrythmias

Question 1

compared to AF and Af?

Answer 1

• easier to handle
• do not predispose to stroke
• not life-threatening

Question 2

tall R wave in V1

Answer 2

RVH
RBBB
preexcitation type A
dextrocardia

Question 3

Reentrant junctional tachyarrhythmias:

• who ges?
• why get/related to what?

Answer 3

• healthy young people get

- related to anxiety, excess caffeine; fatigue

Question 4

Most common occurrence for Reentrant junctional tachyarrhythmias:

Answer 4

AV junctional - may be with an accessory pathway like bundle of kent if present

Question 5

mechanisms for reentrant junctional tachyarrhythmias:

Answer 5

1) AV nodal reentry
2) AV bypass reentry with orthodromic conduction (up bundle of kent and DOWN AV node hence ortho)
3) AV bypass reentry with antidromic Conduction (down bundle of kent and UP AV node hence Anti)

Question 6

Two modes of AV nodal reentrant tachyarrhythmias?

Answer 6

• antegrade though slow and retrograde through fast

- retrograde through slow and antegrade through fast

Question 7

Slow-fast AV nodal tachycardia is analogous to:

Answer 7

Orthodromic AV bypass tachycardia

Question 8

Fast slow AV nodal tachycardia is analogous to

Answer 8

antidromic AV bypass tachycardia

Question 9

P waves and SVT?

Answer 9

-p-waves are almost always absent but can sometimes precede or follow QRS