Paroxysmal SVT (AVNRT/AVRT)

Cardiology

Regular narrow-complex tachycardia from reentry in AV node (AVNRT, common) or accessory pathway (AVRT).

Management

  • Vagal manoeuvres (Valsalva, modified REVERT)
  • Adenosine 6 mg IV rapid push, then 12 mg, then 18 mg
  • β-blocker/verapamil if adenosine ineffective
  • Unstable: sync cardioversion 50-100 J
  • Definitive: catheter ablation

Related in WardRound

Educational — verify locally.

WardRound

WardRound

Clinical Decisions in Seconds