ABSTRACT

In hospitals, patient care sen ice deliver)- is an important factor that determines the rate of quality service. Most of the existing Patient Care Service Delivery System models reported in literature were majorly to improve sen ice in the emergency department using different performance metrics. However, this research work aim is conceptualized on modelling a patient care service delivery system which is characterized by emergency, inpatient and outpatient cases using Timed Colored Petri Nets. The objective ofthe project is to design a Healthcare Delivery System (OHCMS) which is an automated, lite and efficient website application that would solve the problems associated with the traditional approach of Healthcare deliver)' from doctors to their respective patients. Through the use ofsingle Web Based Application that would allow patients to choose their doctors, and enable doctors to consult all ofthem on demand, write health report, medical prescriptions and advises, giving accurate and reliable access in a lesser time and most importantly tracking of services been offered, l ire need of a computerized information system cannot be overemphasized with the present trend in technological development. The development ofthe system follows the iterative enhancement model. The analysis ofthe system is modeled using use case diagram. The design of the s) stem is depicted using class and activity diagrams. The system is implemented using HTML. CSS and JAVASCRIPT language for the Front end and PHP and MYSQL for the back end and data storage, user authentication. The database design was constructed using the chcng and crows foot notation to illustrate the workflow and implementation of the system. The system is tested using test cases. Usability testing revealed that the system is working properly. In developing a l imed Colored Petri Nets (TCPN) model for a patient care service delivery system, the medical personnel (nurses) and the three categories of patient (emergency, inpatient and outpatient) visiting the university medical center in MOUAU, were used as a case study. The (TCPN) model consists ofthree sections. The first section modelled the three categories of patients and their current stales. The second section modelled the Nursing station and how patients were administered by the available nurse(s). while the third section abstracted the nurse-patient service delivery. The developed TCPN model was simulated using CPN tools. The validation of the developed TCPN model was explored by carrying out the statistical analysis between the simulated and the observed average waiting times and queue length of the patients under study. The simulation results of the developed TCPN model revealed the patient average waiting times of 14.5208. 2.9583. 0.9792 and 0.50000 minutes alongside the patient queue length of 27, 6, 5 and 1 as administered by 1. 2, 3 and 4 nurses respectively. Statistically, there were no significant difference between the simulated and the observed average waiting times and the queue lengths of patients under consideration at 5% level. Conclusively, this research work has been able to develop a TCPN model for studying a patient care service delivery system. Also, the developed Timed Colored Petri Nets model, through its simulation, could help in predicting nurse-patient ratio required for effective patient care service delivery in a named medical center.