• A Abella, C Hermosa, V Enciso, I Torrejón, R Molina, M Díaz, T Mozo, F Gordo, and I Salinas.
• Servicio de Medicina Intensiva, Hospital Universitario del Henares, Coslada, Madrid, España.
• Med Intensiva. 2016 Jan 1; 40 (1): 26-32.

ObjectiveTo assess the repercussion of the timing of admission to the ICU upon patient prognosis.DesignA prospective, observational, non-interventional cohort study was carried out.ScopeA second level hospital with 210 operational beds and a general ICU with 8 operational beds.Patients Or ParticipantsThe study comprised all patients admitted to the ICU during 3 years (January 2010 to December 2012), excluding those subjects admitted from the operating room after scheduled surgery. The patients were divided into 2 groups according to the timing of admission (on-hours or off-hours).InterventionsNon-interventional study.Variables Of InterestAn analysis was made of demographic variables (age, sex), origin (emergency room, hospital ward, operating room), comorbidities and SAPS 3 as severity score upon admission, length of stay in the ICU and hospital ward, and ICU and hospital mortality.ResultsA total of 504 patients were included in the on-hours group, versus 602 in the off-hours group. Multivariate analysis showed the factors independently associated to hospital mortality to be SAPS 3 (OR 1.10; 95% CI 1.08-1.12), and off-hours admission (OR 2.00; 95% CI 1.20-3.33). In a subgroup analysis of the off-hours group, the admission of patients on weekends or non-working days compared to daily night shifts was found to be independently associated to hospital mortality (OR 2.30; 95% CI 1.23-4.30).ConclusionsAdmission to the ICU in off-hours is independently associated to patient mortality, which is also higher in patients admitted on weekends and non-working days compared to the daily night shifts.Copyright © 2015 Elsevier España, S.L.U. and SEMICYUC. All rights reserved.

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