• J. Am. Coll. Surg. · Apr 2013

    Re-engineering the operating room using variability methodology to improve health care value.

    • C Daniel Smith, Thomas Spackman, Karen Brommer, Michael W Stewart, Michael Vizzini, James Frye, and William C Rupp.
    • Department of Surgery, Mayo Clinic in Florida, Jacksonville, FL 32224, USA. smith.c.daniel@mayo.edu
    • J. Am. Coll. Surg.. 2013 Apr 1;216(4):559-68; discussion 568-70.

    BackgroundVariability in flow of patients through operating rooms has a dramatic impact on a hospital's performance and finances. Natural variation (uncontrollable) and artificial variation (controllable) differ and require different resources and management. The aim of this study was to use variability methodology for a hospital's surgical services to improve operational performance.Study DesignOver a 3-month period, all operations at a referral center were classified as either scheduled (artificial variation) or unscheduled (natural variation). Data regarding patient flow were collected for all cases. From these data, mathematical models determined explicit resources to be allocated for scheduled and unscheduled cases, with isolation of the 2 flow streams. Services were allocated block time based on 80% prime time use, and scheduled cases were capped at 5:00 PM. Guidelines for operating room access were implemented to smooth the daily schedule and minimize artificial variation on the day of surgery. After implementation of this redesign, 12 months of data were compared with the previous 12-month period. Metrics analyzed included prime time use, overtime minutes, access for urgent or emergent cases, the number of room changes to the elective schedule on the day of surgery, and variation of daily schedules.ResultsSurgical volume and surgical minutes increased by 4% and 5%, respectively. Prime time use increased by 5%. Overtime staffing decreased by 27%. Day-to-day variability decreased by 20%. The number of elective schedule same day changes decreased by 70%. Staff turnover rate decreased by 41%. Net operating income and margin improved by 38% and 28%, respectively.ConclusionsVariability management results in improvement in operating room operational and financial performance. This optimization may have a significant impact on a hospital's ability to adapt to health care reform.Copyright © 2013 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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