Mortality Predictors in a Year after Implantation of Cardiac Defibrillators

Introduction: Implantable cardiac defibrillators (ICDs) are commonly used to prevent sudden death in patients with heart failure. This study aims to determine patients' mortality rate and predictors in the first year after ICD implantation. Methods: The study was a historical cohort based on patients who underwent ICD implantation at the Baqiyatallah Hospital from March ۲۰۰۹ to March ۲۰۱۸. ICD Implantation was used as secondary prevention for the patients. Results: ۷۷۷ ICD Implanted patients, including ۲۷.۵% females and ۷۲.۵% males with a mean age of ۶۴.۲ ± ۰.۸ ۶۳.۵ ± ۱۲.۷ years, were included in the study. The mean one-year survival was ۱۱.۲۹ ± ۰.۱ months. In multivariate analysis, age>۷۵, hypertension, chronic obstructive pulmonary disease, chronic kidney disease, and hyponatremia were significantly correlated with shorter survival time. Conclusions: Old age, chronic kidney or lung disease, hyponatremia, hypertension, and anemia are independent predictors of first-year survival in patients with an ICD implantation for heart failure.

Keywords:

First-year mortality , Heart failure , Implantable Cardiac Defibrillators