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Ages Eligible for Study:
18 Years and older (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Patients receiving their first CRT-D
Patients who sign and date a Patient Informed Consent prior to device implant
Patients who are available and willing to attend follow-up visits at the study center in which they were enrolled
Patients who are anticipated to receive pacing modes other than DDD or VDD (i.e., chronic atrial fibrillation patients are excluded), or patients who are anticipated to receive adaptive rate therapy
Patients who are younger than 18 years of age
Patients whose life expectancy is less than six-months due to other medical conditions
Patients with or who are likely to receive a tricuspid or other valve prosthesis
Patients who are currently enrolled in another investigational study that would directly impact the treatment or outcome of the current study