This registry is a retrospective, observational, non-controlled chart review conducted to support an indication expansion of the Tendril STS 2088 lead to include pacing/sensing in the left bundle branch area.~Data from a minimum of 220 attempted subjects will be included in order to have 190 evaluable subjects in this registry. The chart review will be conducted at up to 20 participating centers worldwide.
The purpose of this registry is to evaluate the safety and effectiveness of LBBA pacing/sensing in patients already implanted with the Tendril STS 2088 lead.