title: [Risk assessment of critical patients requiring ambulance transfers].
abstract: BACKGROUND
  Secondary transfers of critical patients between hospitals may be associated with risk of death and complications
  
  
  OBJECTIVE
  To determine the risk profile of adults subjected to secondary transfers using the Emergency Medical Attention System (SAMU) operating in Metropolitan Santiago.
  
  
  METHODS
  Cross sectional study including 432 adults undergoing secondary transfers using SAMU between January 1 and June 30 2010. Demographic, biomedical, hemodynamic and transfer data were obtained. Cardiopulmonary arrests (CPR) and an increase in the Rapid Emergency Medicine Score (REMS) scale, were considered as outcome variables.
  
  
  RESULTS
  CPR occurred in 6.4% of the study population and was significantly associated with the initial REMS score and the need for hemodynamic and ventilator support. The initial REMS score was a good predictor of the final REMS score. The final REMS was significantly associated with the presence of comorbidities and the need for hemodynamic and ventilator support.
  
  
  CONCLUSIONS
  REMS is a useful scale to assess the risk profile of critical patients requiring transfers between hospitals.
authors.affiliation: Escuela de Enfermería, Pontificia Universidad Católica de Chile, Chile. mcarrilb@uc.cl
authors.forename: Marie Jesie
authors.initials: MJ
authors.lastname: Carrillo B
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Urrutia S
mesh_terms: D000328:Adult; D000368:Aged; D000552:Ambulances; D002677:Chile; D016638:Critical Illness; D003430:Cross-Sectional Studies; D004632:Emergency Medical Services; D005260:Female; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D019984:Quality Indicators, Health Care; D012121:Respiration, Artificial; D018570:Risk Assessment; D014505:Urban Population