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01.09.2016 | Original Article | Ausgabe 9/2016

Neurological Sciences 9/2016

Charlson comorbidity index as a predictor of in-hospital death in acute ischemic stroke among very old patients: a single-cohort perspective study

Zeitschrift:
Neurological Sciences > Ausgabe 9/2016
Autoren:
Lorenzo Falsetti, Giovanna Viticchi, Nicola Tarquinio, Mauro Silvestrini, William Capeci, Vania Catozzo, Agnese Fioranelli, Laura Buratti, Francesco Pellegrini

Abstract

Chronic diseases are increasing worldwide. Association of two or more chronic conditions is related with poor health status and reduced life expectancy, particularly among elderly patients. Comorbidities represent a risk factor for adverse events in several critical illnesses. We aimed to evaluate if elderly patients are affected by multiple chronic pathologies, assessed by Charlson comorbidity index (CCI), showed a reduced in-hospital survival after ischemic stroke. In a 3-year period, we evaluated all the subjects admitted to our internal medicine department for ischemic stroke. Age, sex, NIHSS score and all the comorbidities were recorded. Days of hospitalization, hospital-related infections and in-hospital mortality were also assessed. For each patient, we evaluated CCI, obtaining four classes: group 1 (CCI: 2–3), group 2 (CCI: 4–5), group 3 (CCI: 6–7) and group 4 (CCI: ≥8). Survival was evaluated with Kaplan–Meier and Cox regression analyses. The complete model considered in-hospital death as the main outcome, days of hospitalization as the time variable and CCI as the main predictor, adjusting for NIHSS, sex and nosocomial infections. Patients in CCI group 3 and 4 had an increased risk of in-hospital mortality, independently of NIHSS, sex and nosocomial infections. Elderly patients with multiple comorbidities have higher risk of in-hospital death when affected by ischemic stroke.

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