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Queueing Models for Healthcare Operations

  • Diwakar Gupta
Chapter
Part of the International Series in Operations Research & Management Science book series (ISOR, volume 184)

Abstract

Patients seeking healthcare often need to wait before they can receive needed services. Excessive waiting can cause prolonged discomfort, economic loss, and long-run health complications. This motivates us to look closely at the theory of queues in order to understand the reasons why queues form and the principles underlying good system design. Queueing models help explain the interaction between resource utilization and variability. Higher resource utilization lowers the per-patient cost of making resources available, but in the presence of variability in either the service requirements or the number of service requests or both, higher utilization increases patient waiting times. In fact, for a fixed level of variability, the effect of resource utilization is highly nonlinear—waiting times increase at an increasing rate in utilization. This implies that in healthcare settings where significant variability is naturally present and difficult to eliminate, capacity planning must trade-off the cost of providing resources and the cost of patient waiting. In this chapter, we review basic queueing models that help quantify the above-mentioned tradeoff and discuss the usefulness of such models to healthcare operations managers. Specifically, we summarize some known results for queueing systems with single and multiple servers, limited and unlimited waiting room, service priority, and networks of service stations.

Keywords

Service Time Priority Queue Service Facility Service Time Distribution Customer Class 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.University of MinnesotaMinneapolisUSA

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