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Final Presentation 111
1. Validation of a Model Using Flexsim HC,
ProModel simulation to improve the Flow of
Patient through a medical HC Facility
Abdualaziz E Alqahtani
KFT221
University of Tennessee at
Chattanooga
Industrial Engineering project
Nov 30th, 2015
2. The Content
Introduction
Background
Deliverables
Project overview
Assumptions
Patient flow
Process overview
Data Analysis
Simulation data
Simulation
Simulation Layout
3. The Content
Challenges
Results
Best scenario
Results
Comparison
Flexsim
Flexsim results
Scenarios
Conclusion
Future work
4. Introduction
the US healthcare system had shortcomings due to the growing
complexity of medical practice by a poor organization healthcare
delivery system; in fact the aging population was another factor
that affected the deliverables of healthcare practices too.
Nowadays, Healthcare facilities are experiencing continuously
increasing pressure to perform effectively and efficiently due to
the accessibility of new medical devices, the number of patients,
and more importantly the competition between healthcare
providers.
5. Background
2011 Capstone Project
Patient Process Time by Service Steps
Recommended 25 Minute Scheduling Intervals
2012 Capstone Project
Recently Expanded Facility
Refine Provider Service Times
Refine Service Step Times
Facility Assessment of Expanded Facility
Analysis of Employees Activities
2015
???
6. Background
2015 project
Study the effect of increasing and/or decreasing the
Exam Rooms in the facility
Nurse utilization
Analyzing the average time in system in accordance with
processing time
Analyzing the average time in system in accordance with
number of patients
Manipulate the arrival time
Validate Promodel simulation via Flexsim HC
7. Deliverables
Simulation to measure the effect of multiple scenarios
for patient, resource and flow changes.
Nurse activities.
Reduce waiting time
Down size the number of Exam Room and compare
the effect in the overall processing time.
8. Project Overview
The understanding of the operational overview would help in
designing the simulation model. The operational overview
explains the movement of patients from entering the system till
they exit
9. Assumptions
Process starts at t=0
Patient arrive every 15 min
No walk-ins
Patients are processed oldest first
The data collected from the time study is a valid
representation of the system
There is down time for one or multiple exam rooms
Resources have no downtime
The travel time is negligible
Check out time is negligible
The distribution used is Normal
14. Simulation
the purpose simulation programs is find the areas that can be
improved through multiple scenarios. These scenarios are
involving the staff utilization, Exam room utilization, scheduling
and number of patients.
Two computer programs have been used. The purpose is to
validate the results. The programs used are:
ProModel
FlexSim
Expectations:
Reduce the waiting time
Eliminate the accumulation of patients
Nurse Utilization. And,
Exam Room utilization
17. Challenges
There are few challenges using FlexSim Health Care:
lack of overview global process simulation
possibility to measure specific activity performance (e.g the
time spent waiting for doctor)
The designed model runs on number of hours, therefore,
running number of patents was never an option.
18. Scenario
In this scenario
6 scenarios run for 4 hours and 16 Patients, 50 replicate
Arrival Rate 15-30 min
1 nurse for each doctor
Different Exam Rooms
20. Resource Activities
In the resources scenario
6 scenarios run for 4 hours and 16 Patients
50 replicate
Arrival Rate 15-30 min
Nurse pool
3 Exam Rooms
22. The Best Scenario
The best scenario
Arrival Rate 20-30 Min
Nurse pool of 8
Multiple location
the applied scenario Is stated in the following table
30. FlexSim Results
Due to the challenges the results were close, however, further
programming is required to set the patients attribute, define the
percentage of New Vs. Establish patients
31. Conclusion
Each doctor should have a number of patients according to
their processing time
Changing the location availability and nurses won't help much
The Accumulation of patients are due to the arrival rate
Increasing the Exam rooms would only increase the waiting
time in the facility. “for some providers”
it would be useful to have a separate data to established and
new patients.
32. Future Work & recommendations
Use The time specified scheduling
New: 30 to 45 minutes
Established patient: 15 to 20 minutes
In the time study, different processing time for new and
establish patients should be collected.
Reduce the processing time for some providers
