| Process modeling of emergency department patient flow: effect of patient length of stay on ED diversion. | |
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MedLine Citation:
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PMID: 18814495 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A discreet event simulation methodology has been used to establish a quantitative relationship between Emergency Department (ED) performance characteristics, such as percent of time on ambulance diversion and the number of patients in queue in the waiting room, and the upper limits of patient length of stay (LOS). A simulation process model of ED patient flow has been developed that took into account a significant difference between LOS distributions of patients discharged home and patients admitted into the hospital. Using simulation model it has been identified that ED diversion could be negligible (less than approximately 0.5%) if patients discharged home stay in ED not more than 5 h, and patients admitted into the hospital stay in ED not more than 6 h Using full factorial design of experiments with two factors and the model's predicted percent diversion as a response function, other combinations of LOS upper limits have been determined that would result in low ED percent diversion as well. It has also been determined that if the number of patients exceeds 11 in queue in ED waiting room then the diversion percent is rapidly increasing. |
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Authors:
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Alexander Kolker |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of medical systems Volume: 32 ISSN: 0148-5598 ISO Abbreviation: J Med Syst Publication Date: 2008 Oct |
Date Detail:
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Created Date: 2008-09-25 Completed Date: 2009-01-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7806056 Medline TA: J Med Syst Country: United States |
Other Details:
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Languages: eng Pagination: 389-401 Citation Subset: IM |
Affiliation:
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Children's Hospital of Wisconsin, Milwaukee, WI, USA. alexanderkolker@yahoo.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Simulation* Emergency Service, Hospital / organization & administration* Humans Length of Stay* Models, Organizational* Patient Discharge Patient Transfer |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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