Thursday Didactic: Narrow-Complex Tachycardia

Question 1

When you see a narrow-complex tachycardia, the first question you should ask is ______________.

Answer 1

is the rate regular or irregular

Question 2

What are the narrow-complex, regular tachycardias?

Answer 2

• Sinus tachycardia: normal rhythm
• Atrial tachycardia: inverted P wave in I, II, aVF
• AVRT:
• AVNRT: retrograde P wave (pseudo-S-wave) that results from the depolarization going back up the fast path
• Atrial flutter: saw-tooth pattern, can look almost like normal ones that are more jagged on the upslope