title: Multiple hospitalizations at the Department of Internal Medicine of a tertiary hospital.
abstract: OBJECTIVE
  Patient who require multiple hospitalizations result in a considerable consumption of healthcare resources. In this study, we analyzed the factors associated with the multiple hospitalizations of a cohort of patients treated at a department of internal medicine.
  
  
  METHODS
  A total of 613 consecutive hospitalizations were analyzed. A multiple-hospitalization patient was defined as one who at the time of admission had been hospitalized 3 or more times in the past year. We analyzed the relationship between demographic, clinical and societal factors on one hand and having been hospitalized on multiple occasions on the other. We also analyzed readmissions in the 6 months after discharge, as well as mortality during the hospitalization and in the 6 and 12 months after discharge.
  
  
  RESULTS
  When compared with patients who have not been hospitalized on multiple occasions, multiple-hospitalization patients are more likely to be male, younger and to have greater comorbidity, greater consumption of medicines and higher Katz Index scores. The main cause for admission for multiple-hospitalizations patients was chronic disease decompensation (87.3%). The diseases that were most obviously associated with multiple hospitalizations were heart failure, diabetes mellitus and chronic obstructive pulmonary disease. In the first 6 months after discharge, multiple-hospitalization patients had a greater number of readmissions. During the study period, 40.4% of the multiple-hospitalization patients died, and 28.8% of the nonmultiple-hospitalization patients died.
  
  
  CONCLUSIONS
  Multiple-hospitalization patients have a greater clinical complexity than nonmultiple-hospitalization patients, and multiple hospitalizations are associated with chronic diseases, polypharmacy, functional impairment and high mortality rates.
authors.affiliation: Servicio de Medicina Interna, Complejo Hospitalario de Navarra, Pamplona, Navarra, España. Electronic address: daniel.etxeberria.lekuona@navarra.es.
authors.forename: D
authors.initials: D
authors.lastname: Etxeberria-Lekuona
authors.affiliation: Servicio de Medicina Interna, Complejo Hospitalario de Navarra, Pamplona, Navarra, España.
authors.forename: J M
authors.initials: JM
authors.lastname: Casas Fernández de Tejerina
authors.affiliation: Servicio de Medicina Interna, Hospital García Orcoyen, Estella, Navarra, España.
authors.forename: I
authors.initials: I
authors.lastname: Méndez López
authors.affiliation: Servicio de Medicina Interna, Complejo Hospitalario de Navarra, Pamplona, Navarra, España.
authors.forename: J
authors.initials: J
authors.lastname: Oteiza Olaso
authors.affiliation: Servicio de Medicina Interna, Hospital García Orcoyen, Estella, Navarra, España.
authors.forename: M
authors.initials: M
authors.lastname: Arteaga Mazuelas
authors.affiliation: Servicio de Medicina Interna, Hospital García Orcoyen, Estella, Navarra, España.
authors.forename: V
authors.initials: V
authors.lastname: Jarne Betran
keywords: Chronic disease; Comorbidity; Comorbilidad; Enfermedad crónica; Hospital readmission; Mortalidad; Mortality; Multiingresador; Multiple admission patient; Reingreso hospitalario