Table 2.

Indications for leadless pacemaker (LP) therapy according to the underlying arrhythmia: clinical evidence is graded as A, B, or C; * good candidate for LP implantation (evidence B) in elderly, inactive patients

Good candidate for LP implantation (evidence B): • Permanent AF and AV block or slow ventricular response Possible candidate for LP implantation (evidence B): • Transient sinus arrest or AV block with need of backup pacing and very low anticipated ventricular pacing rate (≤ 1–5% of beats)

Possible candidate for LP implantation under certain circumstances (evidence C): • Transient or permanent AV block with increased anticipated ventricular pacing rate (> 1–5% of beats) • Sick sinus syndrome with transient or permanent bradycardia with increased anticipated ventricular pacing rate (> 1–5% of beats)* • Recurrent syncope due to vagally induced cardio-inhibition (sinus bradycardia or transient AV block)