Junctional Tachycardia or Nodal Tachycardia

In this article, we will discuss the Junctional Tachycardia or Nodal Tachycardia. So, let’s get started.

Junctional Tachycardia

It is a narrow QRS complex tachycardia with enhanced automaticity of AV node either due to digitalis toxicity or excessive use of exogenous catecholamine. It is diagnosed by tachycardia with narrow QRS complexes where P waves are either obscured or may propagate antegrade or retrograde with origin at the junction, hence P-wave may proceeds or follow QRS.


  • Cardioversion is harmful if digitalis induced. Otherwise also cardioversion is unsuccessful.
  • I.V. beta-blockers are effective in symptomatic junctional tachycardia.
  • I.V. diltiazem, Verapamil or Procainamide are reasonably good in acute cases.

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