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Chronic renal insufficiency is an independent predictor of mortality in implantable cardioverter-defibrillator recipients. 2007

Carol Chen-Scarabelli, and Tiziano M Scarabelli
VA Ann Arbor Healthcare System, Ann Arbor, Michigan 48105, USA. carol.chen-scarabelli@med.va.gov

BACKGROUND Chronic renal insufficiency (CRI) has been associated with increased risk of cardiovascular morbidity and mortality. However, there is limited knowledge regarding this association and the effect of renal dysfunction on survival benefit in patients with implantable cardioverter-defibrillators (ICDs). METHODS We investigated whether there was an association between CRI (defined as serum creatinine levels >or=1.5 mg/dL) and increased risk of mortality in ICD recipients. We retrospectively studied all patients (n = 336) followed within our ICD clinic in a 2.5-year period. CRI, ventricular tachycardia (VT), cardiomyopathy (CM), and mortality were recorded. Ischemic CM was defined as the presence of coronary artery disease (CAD) and left ventricular ejection fraction <or= 30%. RESULTS Despite no significant difference in CAD and VT occurrence between CRI and non-CRI groups in the overall population, there was a significantly higher mortality rate in the CRI group (P < 0.0001). CONCLUSIONS CRI is a significant independent predictor of mortality in ICD recipients. Further investigation is needed to determine whether prevention, early detection, and more aggressive intervention in the treatment of CRI will reduce the incidence of mortality in this population.

UI MeSH Term Description Entries
D008297 Male Males
D008824 Michigan State bounded on the north by the Great Lakes, on the east by Canada, on the south by Wisconsin, Indiana, and Ohio, and on the west by Lake Michigan and Wisconsin.
D004554 Electric Countershock An electrical current applied to the HEART to terminate a CARDIAC ARRHYTHMIA. Cardiac Electroversion,Cardioversion,Defibrillation, Electric,Electroversion, Cardiac,Electrical Cardioversion,Electroversion Therapy,Therapy, Electroversion,Cardiac Electroversions,Cardioversion, Electrical,Cardioversions,Cardioversions, Electrical,Countershock, Electric,Countershocks, Electric,Defibrillations, Electric,Electric Countershocks,Electric Defibrillation,Electric Defibrillations,Electrical Cardioversions,Electroversion Therapies,Electroversions, Cardiac,Therapies, Electroversion
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor
D015897 Comorbidity The presence of co-existing or additional diseases with reference to an initial diagnosis or with reference to the index condition that is the subject of study. Comorbidity may affect the ability of affected individuals to function and also their survival; it may be used as a prognostic indicator for length of hospital stay, cost factors, and outcome or survival.
D015996 Survival Rate The proportion of survivors in a group, e.g., of patients, studied and followed over a period, or the proportion of persons in a specified group alive at the beginning of a time interval who survive to the end of the interval. It is often studied using life table methods. Cumulative Survival Rate,Mean Survival Time,Cumulative Survival Rates,Mean Survival Times,Rate, Cumulative Survival,Rate, Survival,Rates, Cumulative Survival,Rates, Survival,Survival Rate, Cumulative,Survival Rates,Survival Rates, Cumulative,Survival Time, Mean,Survival Times, Mean,Time, Mean Survival,Times, Mean Survival
D016016 Proportional Hazards Models Statistical models used in survival analysis that assert that the effect of the study factors on the hazard rate in the study population is multiplicative and does not change over time. Cox Model,Cox Proportional Hazards Model,Hazard Model,Hazards Model,Hazards Models,Models, Proportional Hazards,Proportional Hazard Model,Proportional Hazards Model,Cox Models,Cox Proportional Hazards Models,Hazard Models,Proportional Hazard Models,Hazard Model, Proportional,Hazard Models, Proportional,Hazards Model, Proportional,Hazards Models, Proportional,Model, Cox,Model, Hazard,Model, Hazards,Model, Proportional Hazard,Model, Proportional Hazards,Models, Cox,Models, Hazard,Models, Hazards,Models, Proportional Hazard

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