Mortality Predictors in a Year after Implantation of Cardiac Defibrillators

Document Type : Original Article


Assistance Professor, Atherosclerosis Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran



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 2009 to March 2018. ICD Implantation was used as secondary prevention for the patients.

Results: 777 ICD Implanted patients, including 27.5% females and 72.5% males with a mean age of 64.2 ± 0.8 63.5 ± 12.7 years, were included in the study. The mean one-year survival was 11.29 ± 0.1 months. In multivariate analysis, age>75, 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.


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