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Healthcare Operations

Care services · decision horizons · twelve models

Healthcare operations research asks how hospitals, ambulance services, home–care agencies, and long–term care facilities allocate limited staff, beds, operating theatres, equipment, and time to deliver care that is clinically effective, equitable, and affordable — across horizons that stretch from a triage decision made in seconds to a regional facility plan made over years. This section presents twelve canonical healthcare OR problems, each as a live interactive solver grounded in a real clinical–operations decision, organized along the Hulshof et al. (2012) 2–axis taxonomy — decision horizon × care service — which specializes the generic healthcare planning–and–control framework of Hans, van Houdenhoven & Hulshof (2012) to the managerial area of resource capacity planning.

Why healthcare OR matters

Scale of the problem · three anchor statistics

~10%
of global GDP is spent on health — scheduling, location, and routing decisions touch almost every dollar of operating expense.
World Bank Health expenditure data · data.worldbank.org
Largest
revenue center in most hospitals: the operating theatre. Surgical-care resource-capacity planning is consequently the most studied topic in healthcare OR.
Cardoen, Demeulemeester & Beliën (2010), EJOR 201(3), 921–932 · doi:10.1016/j.ejor.2009.04.011
50+ yr
of healthcare OR as a discipline — dedicated journals (Health Care Management Science, Operations Research for Health Care) and the ORAHS community meeting annually since 1975.
European Working Group on OR Applied to Health Services · orahs.euro-online.org

Decision framework

Four lenses on the same twelve applications

The canonical taxonomy of Hulshof, Kortbeek, Boucherie, Hans & Bakker (2012) — itself specializing the Hans et al. (2012) framework to resource capacity planning — organizes healthcare decisions along two axes: the decision horizon (strategic, tactical, offline operational, online operational) and the care service (ambulatory, emergency, surgical, inpatient, home, residential). Every application in this section occupies one cell. Dashed cells are honest gaps — decisions that exist in practice but are not yet modelled here.

Horizon ↓  ·  Care service →
Ambulatoryoutpatient, radiology
EmergencyED, ambulance
Surgicaloperating theatre
InpatientICU, wards
Homevisiting care
ResidentialLTC, nursing home
Strategicyears
Gap · regional coverage & panel sizing
Gap · OR case-mix & theatre dimensioning
Gap · placement policy & districting
Gap · long-term-care bed dimensioning
Tacticalmonths – quarter
Gap · appointment templates & slot mix
Gap · EMS staff-shift scheduling
Gap · Master Surgical Schedule (MSS)
Gap · multi-disciplinary team allocation
Gap · LTC staffing
Offline-opday – week
Gap · outpatient appointment scheduling
Gap · ED staff-to-shift assignment
Gap · admission & transfer scheduling
Online-opreal-time
Gap · dynamic appointment rescheduling
Gap · surgical case rescheduling
Gap · dynamic bed transfer
Gap · real-time re-routing of nurse visits
Gap · event-driven transfer

The Hans, van Houdenhoven & Hulshof (2012) generic framework puts decisions along the horizon axis against four managerial areas: medical planning (clinician-driven protocol, triage, treatment decisions), resource capacity planning (staff, facilities, equipment), materials planning (supplies, pharmacy, blood), and financial planning. Our current catalog is concentrated in resource capacity — the Medical, Materials, and Financial columns surface honest blind spots.

Horizon ↓  ·  Managerial area →
Medicalclinicians & protocol
Resource Capacitystaff · facility · equipment
Materialssupplies · pharmacy
Financialbudget & billing
Strategic
Gap · medical-protocol design & service mix
Gap · supply-chain design & central warehouse
Gap · capital budgeting & insurance contracting
Tactical
Gap · procurement & tendering
Gap · cost allocation & DRG tariff
Offline-op
Gap · patient-triage rules & pathways
Gap · DRG billing & coding
Online-op
Gap · real-time triage
Gap · just-in-time stock replenishment
Gap · cash-flow monitoring

The patient-centric complement: every application has a primary point of intervention along the clinical pathway from prevention through palliation. Aringhieri et al. (2017) apply this pathway lens to emergency medical services; care–chain surveys (Vanberkel et al. 2010) generalize it to cross-department planning.

A resource-centric cut: the OR problem family each application belongs to depends largely on the renewable resource being scheduled or the consumable being distributed. Surveys like Van den Bergh et al. (2013) (personnel scheduling) and Ernst et al. (2004) (staff rostering) use this lens to categorize the vast healthcare workforce literature; Cardoen et al. (2010) does the same for surgical resources.

Staff
Nurses, physicians, technicians, and home-care workers — the dominant recurring cost and the hardest constraint to relax.
Facilities
Hospitals, EMS stations, and inpatient beds as fixed physical assets. Strategic location and tactical allocation questions dominate.
Equipment
Operating theatres, imaging machines, and ambulance vehicles. These are typically modelled as machines or vehicles in classical OR formulations.
Materials & Information
Medical supplies, drugs, and the data flows (trial records, routing information) that co-ordinate them.

Application catalog

All twelve pages · click a card to open the interactive solver

p-Median · MCLP Strategic
Ambulance Station Placement
Locate a fleet of ambulance stations to minimize expected response time across an emergency-demand surface. Discrete-location model with coverage side constraints.
UFLP · p-Median Strategic
Department Capacity Planning
Open and size inpatient units across a multi-site health system to match a forecast case–mix demand surface at lowest total cost.
Bin Packing · Knapsack Tactical
Hospital Bed Management
Allocate ED surge and elective admissions into a limited ward–bed inventory. A packing formulation that surfaces where stochastic extensions matter most.
RCPSP Tactical
Clinical Trial Planning
Sequence trial activities subject to precedence and renewable–resource constraints. The canonical resource–constrained project–scheduling setting, applied to research operations.
Job Shop Offline-op
Operating Room Scheduling
Sequence elective surgical cases across pre-op, theatre, and recovery stages. Cardoen et al. (2010) classic setting; interactive Giffler–Thompson and dispatching rules.
ILP · CSP Offline-op
Nurse Rostering
Assign qualified nurses to weekly shifts respecting skill, rest, coverage, and fairness constraints. The canonical nurse–rostering ILP of Burke et al. (2004) and related surveys.
LAP · Hungarian Offline-op
Nurse–Patient Assignment
Within a shift, assign nurses to patients by acuity, balancing workload. A linear assignment problem solved exactly by the Hungarian algorithm.
VRPTW Offline-op
Home Visits Routing
Route home-care nurses through a day of patient visits with hard time windows and skill requirements. Fikar & Hirsch (2017) survey frames the variants.
CVRP Offline-op
Medical Supply Distribution
Deliver consumables from a regional hub to rural clinics subject to vehicle–capacity constraints. Classic Clarke–Wright, sweep, and metaheuristic comparisons.
Shortest Path · dispatching Online-op
Emergency Vehicle Routing
Find the fastest path from an ambulance depot to an incident on a congested road network. Pedagogical SP; real-world dispatching adds dynamic travel times and fleet coupling.
Job Shop · DES Online-op
ED Patient Flow
Route patients through triage, diagnostics, treatment, and disposition while acuity and staffing vary over the shift. Saghafian et al. (2015) provides the reference review.
Families index
Problem Families
Follow any chip tag on this page back to the underlying OR problem family — Scheduling, Routing, Location, Assignment, Packing, Stochastic — for complexity, methods, and benchmarks.

Current research frontiers

Where healthcare OR is actively evolving

Integrated care-chain planning

Hulshof et al. (2012) flag the persistent void in OR/MS models that span multiple departments along a patient's care pathway. Joint inpatient-surgical-outpatient capacity planning, and the bed–to–OR–to–ward cascade, are active research targets.

Stochastic & robust scheduling under demand uncertainty

Arrival rates, service times, and no-show behavior are inherently stochastic. Two-stage SP, distributionally robust optimization (DRO), and chance-constrained ILPs for nurse rostering and OR scheduling are a dominant frontier (Erhard et al. 2018; Gupta & Denton 2008).

Online learning & real-time dispatching

Reinforcement-learning-augmented decision policies for ambulance dispatching, ED patient flow, and add-on surgery scheduling — leveraging electronic health records and sensor streams for online operational control.

Equity-aware healthcare operations

Formalizing fairness objectives — nurse-preference balance, geographical equity of access, wait-time fairness across patient classes — alongside efficiency. Linking OR to health-disparities measurement is a growing area.

Key references

Foundational surveys · cited above · DOIs included

Hulshof, P. J. H., Kortbeek, N., Boucherie, R. J., Hans, E. W., & Bakker, P. J. M. (2012).
“Taxonomic classification of planning decisions in health care: A structured review of the state of the art in OR/MS.”
Health Systems, 1(2), 129–175. doi:10.1057/hs.2012.18
Hans, E. W., van Houdenhoven, M., & Hulshof, P. J. H. (2012).
“A framework for healthcare planning and control.”
In R. Hall (Ed.), Handbook of Healthcare System Scheduling (Ch. 12, pp. 303–320). Springer. doi:10.1007/978-1-4614-1734-7_12
Cardoen, B., Demeulemeester, E., & Beliën, J. (2010).
“Operating room planning and scheduling: A literature review.”
European Journal of Operational Research, 201(3), 921–932. doi:10.1016/j.ejor.2009.04.011
Rais, A., & Viana, A. (2011).
“Operations research in healthcare: A survey.”
International Transactions in Operational Research, 18(1), 1–31. doi:10.1111/j.1475-3995.2010.00767.x
Brailsford, S. C., Harper, P. R., Patel, B., & Pitt, M. (2009).
“An analysis of the academic literature on simulation and modelling in health care.”
Journal of Simulation, 3(3), 130–140. doi:10.1057/jos.2009.10
Van den Bergh, J., Beliën, J., De Bruecker, P., Demeulemeester, E., & De Boeck, L. (2013).
“Personnel scheduling: A literature review.”
European Journal of Operational Research, 226(3), 367–385. doi:10.1016/j.ejor.2012.11.029
Erhard, M., Schoenfelder, J., Fügener, A., & Brunner, J. O. (2018).
“State of the art in physician scheduling.”
European Journal of Operational Research, 265(1), 1–18. doi:10.1016/j.ejor.2017.06.037
Burke, E. K., De Causmaecker, P., Vanden Berghe, G., & Van Landeghem, H. (2004).
“The state of the art of nurse rostering.”
Journal of Scheduling, 7(6), 441–499. doi:10.1023/B:JOSH.0000046076.75950.0b
Ernst, A. T., Jiang, H., Krishnamoorthy, M., & Sier, D. (2004).
“Staff scheduling and rostering: A review of applications, methods and models.”
European Journal of Operational Research, 153(1), 3–27. doi:10.1016/S0377-2217(03)00095-X
Gupta, D., & Denton, B. (2008).
“Appointment scheduling in health care: Challenges and opportunities.”
IIE Transactions, 40(9), 800–819. doi:10.1080/07408170802165880
Fikar, C., & Hirsch, P. (2017).
“Home health care routing and scheduling: A review.”
Computers & Operations Research, 77, 86–95. doi:10.1016/j.cor.2016.07.019
Aringhieri, R., Bruni, M. E., Khodaparasti, S., & van Essen, J. T. (2017).
“Emergency medical services and beyond: Addressing new challenges through a wide literature review.”
Computers & Operations Research, 78, 349–368. doi:10.1016/j.cor.2016.09.016
Saghafian, S., Austin, G., & Traub, S. J. (2015).
“Operations research/management contributions to emergency department patient flow optimization: Review and research prospects.”
IIE Transactions on Healthcare Systems Engineering, 5(2), 101–123. doi:10.1080/19488300.2015.1017676
Vanberkel, P. T., Boucherie, R. J., Hans, E. W., Hurink, J. L., & Litvak, N. (2010).
“A survey of health care models that encompass multiple departments.”
International Journal of Health Management and Information, 1(1), 37–69.

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Data and numerical examples are illustrative. No real patient, clinician, or employee data is used. Pages on this site are educational tools, not clinical decision-support software.