title: [Assessment of the appropriate utilization of an emergency department observation unit with the Appropriateness Evaluation Protocol: analysis of 4,700 cases].
abstract: BACKGROUND
  The Emergency Department Observation Units (EDO) constitutes an alternative of conventional hospitalization. The admissions and stays' appropriateness may influence the efficient use of bed resource in an acute care hospital.
  
  
  METHODS
  Prospective evaluation of EDO admissions in a 18 month period, using the original criteria of Appropriateness Evaluation Protocol (A.E.P.), which were adapted to the area characteristics.
  
  
  RESULTS
  We evaluate 4,700 admissions (55.1% male, 44.9% female; mean age: 64.9 +/- 14.9 years old). Average length of stay was 23.8 (+/- 18.3) hours. 35.5% patients were discharged at home and 62.0% were admitted in hospital. In 98.1% patients we obtained clinical stabilization in 48 hours. 85.0% of admissions were explained by 35 DRG categories, the most prevalent being chronic obstructive pulmonary disease (COPD) (411 admissions, 9.0%). A total of 258 (5.5%) admissions were qualified as inappropriate, primary due to diagnostic and therapeutical services that could have been provided in an outpatient basis (3.4%). A total of 797 (17.0%) stays were considered inappropriate, mainly due to hospital bed occupancy (13.0%) and discharge delays because of conservative medical management of patients (3.4%), social problems representing only 0.6%. A daily average of 4.2 beds (total of 19) were inappropriate used as assessed by modified AEP criteria.
  
  
  CONCLUSIONS
  EDO represents an alternative for conventional hospitalization, obtaining patient clinical stabilization in 48 hours and saving unnecessary hospital admissions. AEP application lets know the impact of the efficient use of this area in the emergency department and the hospital.
authors.affiliation: Servicio de Urgencias, Hospital Mútua de Terrassa, Barcelona.
authors.forename: S
authors.initials: S
authors.lastname: Tomás Vecina
authors.forename: E
authors.initials: E
authors.lastname: Duaso Magaña
authors.forename: J M
authors.initials: JM
authors.lastname: Ferrer Tarres
authors.forename: M
authors.initials: M
authors.lastname: Rodríguez Carballeira
authors.forename: R
authors.initials: R
authors.lastname: Porta Castejón
authors.forename: F
authors.initials: F
authors.lastname: Epelde Gonzalo
mesh_terms: D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D005069:Evaluation Studies as Topic; D005260:Female; D006300:Health Services Misuse / Q000706:statistics & numerical data; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010343:Patient Admission / Q000706:statistics & numerical data; D011446:Prospective Studies; D013030:Spain
vernacular_title: Evaluación del uso apropiado de un área de observación de urgencias mediante el Appropriateness Evaluation Protocol: un análisis de 4.700 casos.