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Atrial Fibrillation in Cardiac Resynchronization Therapy with a Defibrillator: A Risk Factor for Mortality, Appropriate and Inappropriate Shocks.
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- Author(s): BOVEN, NICK VAN; THEUNS, DOMINIC; BOGAARD, KJELL; RUITER, JAAP; KIMMAN, GEERT; BERMAN, LILY; VAN DER PLOEG, TJEERD; KARDYS, ISABELLA; UMANS, VICTOR
- Source:
Journal of Cardiovascular Electrophysiology. Oct2013, Vol. 24 Issue 10, p1116-1122. 7p. - Source:
- Additional Information
- Subject Terms: ATRIAL fibrillation treatment; HEART failure treatment; MORTALITY risk factors; CARDIAC output; CARDIAC pacing; CHI-squared test; CONFIDENCE intervals; CREATININE; FISHER exact test; HEART beat; IMPLANTABLE cardioverter-defibrillators; MEDICAL cooperation; REGRESSION analysis; RESEARCH; T-test (Statistics); U-statistics; PROPORTIONAL hazards models; RETROSPECTIVE studies; RECEIVER operating characteristic curves; DATA analysis software; DESCRIPTIVE statistics
- Subject Terms:
- Abstract: Atrial Fibrillation in CRT-D Introduction Knowledge about predictive factors for mortality and (in)appropriate shocks in cardiac resynchronization therapy with a defibrillator (CRT-D) should be available and updated to predict clinical outcome. Methods We retrospectively analyzed 543 consecutive patients assigned to CRT-D in 2 tertiary medical centers. The aim of this study was to assess risk factors for all-cause mortality, appropriate and inappropriate shocks. Results Mean follow-up time was 3.2 (±1.8) years. A total of 110 (20%) patients died, 71 (13%) received ≥1 appropriate shocks, and 33 (6.1%) received ≥1 inappropriate shocks. No patients received a His bundle ablation and biventricular pacing percentage was not analyzed. Multivariable Cox regression analysis showed that a history of atrial fibrillation (AF) (HR 1.74 CI 1.06-2.86), higher creatinine (HR 1.12; CI 1.08-1.16), and a poorer left ventricular ejection fraction (LVEF) (HR 0.97; CI 0.94-1.01) independently predict all-cause mortality. In the entire cohort, history of AF and secondary prevention were independent predictors of appropriate shocks and variables associated with inappropriate shocks were history of AF and QRS ≥150 milliseconds. In primary prevention patients, history of AF also predicted appropriate shocks as did ischemic cardiomyopathy and poorer LVEF. History of AF, QRS ≥150 milliseconds, and lower creatinine were associated with inappropriate shocks in this subgroup. Appropriate shocks increased mortality risk, but inappropriate shocks did not. Conclusion In symptomatic CHF patients treated with CRT-D, history of AF is an independent risk factor not only for mortality, but also for appropriate and inappropriate shocks. Further efforts in AF management may optimize the care in CRT-D patients. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Journal of Cardiovascular Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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