• Michaël Hoang, Aurélie Brunet, Lucie Lhuaire, Catherine Vallet, and Yohan N'Guyen.
• Unité Post Urgences Médicales, Hôpital Robert Debré (Reims University Hospital), Reims, France.
• J Eval Clin Pract. 2025 Feb 1; 31 (1): e14318e14318.

IntroductionFew data on the impact of specific interventions against Emergency Rooms 'or Hospitals overcrowding are available in France.MethodsIn the present report, we retrospectively investigated the impact of the implementation of a short-stay observation unit associated with the admitter-rounder model, especially onto the other in-patient internal medicine units in a French University Hospital.ResultsDuring the first 100 days, 242 patients were admitted into the short-stay observation unit. The median length of stay (LOS) was 5 days, but it was lower during the first and third parts with the admitter-rounder model than during the second part without: 4 versus 6 days (p = 0.007). Internal medicine bed-spaced patients accounted for 19.5% of the bed-spaced patients during the study period versus 28.1% during the same period the previous year (p = 0.04). The median LOS increased significantly in two units of internal medicine: 10 versus 8 days (p = 0.005) and 10 versus 8 days (p = 0.01) during the study period versus the same period the previous year, respectively.DiscussionThe reduced number of Internal Medicine bed-spaced patients, the reduced LOS of patients in short-stay observation unit when associated with the admitter-rounder model and the increase of LOS among some of the in-patient internal medicine units observed in this study should be evaluated elsewhere.© 2025 The Author(s). Journal of Evaluation in Clinical Practice published by John Wiley & Sons Ltd.

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