• Mark Van Houdenhoven, Jeroen M van Oostrum, Erwin W Hans, Gerhard Wullink, and Geert Kazemier.
• Department of Operating Rooms, Erasmus University Medical Center, Rotterdam, The Netherlands. j.vanoostrum@erasmusmc.nl
• Anesth. Analg. 2007 Sep 1;105(3):707-14.

BackgroundAn operating room (OR) department has adopted an efficient business model and subsequently investigated how efficiency could be further improved. The aim of this study is to show the efficiency improvement of lowering organizational barriers and applying advanced mathematical techniques.MethodsWe applied advanced mathematical algorithms in combination with scenarios that model relaxation of various organizational barriers using prospectively collected data. The setting is the main inpatient OR department of a university hospital, which sets its surgical case schedules 2 wk in advance using a block planning method. The main outcome measures are the number of freed OR blocks and OR utilization.ResultsLowering organizational barriers and applying mathematical algorithms can yield a 4.5% point increase in OR utilization (95% confidence interval 4.0%-5.0%). This is obtained by reducing the total required OR time.ConclusionsEfficient OR departments can further improve their efficiency. The paper shows that a radical cultural change that comprises the use of mathematical algorithms and lowering organizational barriers improves OR utilization.

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