Narrow complex tachycardia

Question 1

What are the kinds of ‘regular’ narrow complex tachycardia?

Answer 1

1. Sinus tachycardia
2. Atrial tachycardia - aberrant atrial focus
3. AVNRT

Question 2

Irregular narrow complex tachycardia

Answer 2

1. Atrial fibrillation with fast ventricular response

Question 3

What is the acute management of supraventricular tachycardias?

Answer 3

1. Vagal maoeuvres - vasalva manoeuvre, carotid sinus massage
2. IV adenosine
3. Electrical cardioversion

Question 4

In which case is adenosine contraindicated and what is given as a substitute?

Answer 4

1. Contraindicated in asthmatics

2. Verampamil is a preferable option