Sensing Atrial High Rate Episodes With Implantable Cardioverter-Defibrillators Trial (The SENSE Trial)

The SENSE Trial is designed to study the efficacy of the DX System in detection of atrial
high rate episodes (AHREs) in subjects with no prior history of atrial fibrillation. The DX
System, or "DX," consists of a Biotronik DX ICD, and the Biotronik Linox Smart S DX lead
which is an FDA approved ICD system that incorporates use of an implantable
cardioverter-defibrillator (ICD) lead with dedicated atrial sensing dipoles.

The SENSE Trial will be conducted at 8-12 U.S. sites. The lead coordinating site will be at
Weill Cornell Medical College. Subjects will be followed for 1 year to assess for the primary
endpoints of the trial.

Inclusion Criteria:

- Fulfills standard indications for ICD implantation

- Subject or legally authorized representative can provide written authorization per
institutional requirements

- Subject is intended to be implanted with a complete Biotronik DX system (consisting of
a Biotronik Ilesto 7 VR-T DX ICD or any future FDA approved Lumax VR-T DX ICD, and the
Biotronik Linox Smart S DX lead), or has been implanted with a complete Biotronik DX
system no more than 30 days prior to the date of consent

- Able to comply with Home Monitoring

Exclusion Criteria:

- Subject has prior diagnosis of atrial fibrillation or atrial flutter

- Subject has need for atrial pacing

- Subject unwilling or unable to give informed consent or participate in follow-up

- Subject is unable to comply with Home Monitoring

- Subject is pregnant

- Subject has less than one year estimated life expectancy

- Subject was implanted with a cardiac device capable of detecting AHREs prior to
implantation of the Biotronik DX system

- Subject was implanted with Biotronik DX system and had an AHRE detection before
enrollment