title: [Body mass index and prognosis in the elderly patients with acute coronary syndromes].
abstract: OBJECTIVE
  Little information exists about the prognostic impact of body mass index (BMI) in the elderly with acute coronary syndromes (ACS). We aimed to prospectively assess the association between BMI and midterm mortality in consecutive elderly patients with ACS.
  
  
  METHODS
  We included consecutive ACS patients aged 75 years or older admitted to the Coronary Care Unit. Patients were stratified into 5 BMI subgroups (<20, 20-24.9, 25-29.9, 30-35, > 35 kg/m(2)). Primary endpoint was overall midterm mortality. Analyses were performed by Cox regression method.
  
  
  RESULTS
  During the study period 600 patients were admitted, of whom 579 had known BMI values. Low weight patients (BMI<20 kg/m(2)) were older, with higher prevalence of vasculopathy and lower creatinine clearance. Median follow up was 315 days. Patients with BMI< 20 kg/m(2) had higher mortality as compared to the rest of groups. Adjusted analysis showed an attenuation of these differences, while maintaining significance for the groups of BMI 20-24.9 and 30-35 kg/m(2).
  
  
  CONCLUSIONS
  The association between BMI and mortality was mainly due to worse prognosis in low weight patients. Prospective assessment of comorbidities and other variables linked to ageing should contribute to better understand the association between BMI and mortality.
authors.affiliation: Unidad Coronaria, Àrea de Malalties del Cor, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España. Electronic address: aariza@bellvitgehospital.cat.
authors.forename: Albert
authors.initials: A
authors.lastname: Ariza-Solé
authors.affiliation: Unidad Coronaria, Àrea de Malalties del Cor, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
authors.forename: Valentina
authors.initials: V
authors.lastname: León
authors.affiliation: Unidad de Geriatría, Servicio de Medicina Interna, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
authors.forename: Francesc
authors.initials: F
authors.lastname: Formiga
authors.affiliation: Unidad Coronaria, Àrea de Malalties del Cor, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
authors.forename: José C
authors.initials: JC
authors.lastname: Sánchez-Salado
authors.affiliation: Unidad Coronaria, Àrea de Malalties del Cor, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
authors.forename: Victòria
authors.initials: V
authors.lastname: Lorente
authors.affiliation: Unidad Coronaria, Àrea de Malalties del Cor, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, Barcelona, España.
authors.forename: Angel
authors.initials: A
authors.lastname: Cequier
mesh_terms: D054058:Acute Coronary Syndrome / Q000401:mortality* / Q000628:therapy; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000453:epidemiology; D015897:Comorbidity; D003404:Creatinine / Q000097:blood; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007674:Kidney Diseases / Q000453:epidemiology; D008297:Male; D009765:Obesity / Q000453:epidemiology; D011379:Prognosis; D016016:Proportional Hazards Models; D011446:Prospective Studies; D012008:Recurrence; D012907:Smoking / Q000453:epidemiology; D013030:Spain / Q000453:epidemiology
chemical_list: D003404:Creatinine
keywords: Acute coronary syndromes; Anciano; Body mass index; Elderly; Síndrome coronario agudo; Índice de masa corporal