Predicting the effect of Nurse‐Patient ratio on Nurse Workload and Care Quality using Discrete Event Simulation
2019
AIM: A novel nurse-focused discrete event simulation modelling approach was tested to predict nurse workload and care quality. BACKGROUND: It can be challenging for hospital managers to quantify the impact of changing operational policy and technical design such as nurse-patient ratios on nurse workload and care quality. Planning tools are needed-discrete event simulation is a potential solution. METHOD: Using discrete event simulation, a demonstrator "Simulated Care Delivery Unit" model was created to predict the effects of varying nurse-patient ratios. Modelling inputs included the following: patient care data (GRASP systems data), inpatient unit floor plan and operating logic. Model outputs included the following: nurse workload in terms of task-in-queue, cumulative distance walked and Care quality in terms of task in queue time, missed care. RESULTS: The model demonstrated that as NPR increases, care quality deteriorated (120% missed care; 20% task-in-queue time) and nursing workload increased (120% task-in-queue; 110% cumulative walking distance). CONCLUSIONS: DES has the potential to be used to inform operational policy and technical design decisions, in terms of impacts on nurse workload and care quality. IMPLICATIONS FOR NURSING MANAGEMENT: This research offers the ability to quantify the impacts of proposed policy changes and technical design decisions, and provide a more cost-effective and safe alternative to the current trial and error methodologies.
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