This is a prospective, multicenter, non-randomized registry/observational study. The study will enroll up to 2,000 patients with successful St. Jude Medical (SJM) Cardiac Resynchronization Therapy (CRT) MP device implant from up to 140 centers undergoing CRT implantation.
Any patient who received a market approved SJM Quadra Allure MP, Quadra Assura MP, or newer SJM CRT MP device is eligible for enrollment in the study. MultiPoint Pacing (MPP) programming guidance will be specified in the protocol. Patients will be followed for 12 months after implant. Data will be collected at Baseline (within 30 days prior to implant), Post-Implant (within 30 days following successful CRT device implant), 3, 6, 12 months and during any unscheduled follow-up visit.
Study Type
OBSERVATIONAL
Enrollment
2,169
MPP ON within 1 month post implant and then continuously programmed ON until 12 months (i.e., MPP ON for months 1-12 continuously)
MPP ON at the 12-month study visit and for at least 3 continuous months prior to 12-month assessment (i.e., BiV pacing ON at some point in months 1-9 and MPP ON for months 10-12)
Number of CRT Responders as Measured by the Clinical Composite Score (CCS)
The CCS has 4 components: New York Heart Association (NYHA) functional classification, Patient Global Assessment (PGA), heart failure (HF) events, cardiovascular death. NYHA Class ranges from Class I (least severe) to Class IV (most severe); possible PGA responses are "markedly worse", "moderately worse", "slightly worse", "no change", "slightly better", "moderately better, "markedly better". CCS components were used to classify or score subjects as "IMPROVED" (at least one-class improvement in NYHA Class or improvement by PGA "moderately" or "markedly" better AND no HF events AND no cardiovascular death), or "WORSENED" (worsening in NYHA Class OR worsening by PGA "moderately" or "markedly" worse OR presence of HF events OR Cardiovascular death, or "UNCHANGED" (neither "improved" or "worsened"). Note CCS is not a numeric score. A responder is defined as improved or unchanged from baseline and non-responder is defined as worsened from baseline.
Time frame: One year
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