MedicalResearch.com Interview with:Dr Pamela N Peterson MD
Denver Health Medical Center, CO
MedicalResearch.com: What are the main findings of the study?Answer:We assessed the outcomes of mortality, rehospitalization, and procedural complications among 24,169 patients in the NCDR-ICD Registry with left ventricular systolic dysfunction receiving a cardiac resynchronization device in addition to an implantable defibrillator for the primary prevention of sudden cardiac death between 2006 and 2009. After stratification by the QRS complex morphology and duration on the ECG and adjustment for measured differences in other characteristics, patients with left bundle branch block (LBBB) and QRS durations of at least 150 msec had significantly lower rates of mortality and rehospitalization at 3 years compared with patients with non-LBBB QRS morphology and/or QRS duration of 120-149 msec. Rates of mortality and readmission were generally highest in patients with non-LBBB and QRS duration of 120-149 msec. Rates of procedural complications at 30- and 90-days were similar across strata of QRS morphology and duration.
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