R‐Wave Sensing in an Implantable Cardiac Monitor without ECG‐Based Preimplant Mapping: Results from a Multicenter Clinical Trial

Abstract

The subcutaneous R-wave amplitude correlates with electrode spacing in the implant zone of ICM patients. Implant locations at the V2 -V3 position at a 45° angle offer an adequate R wave for sensing. Preimplant mapping to achieve acceptable R-wave amplitude may not be necessary.