การสร้างแบบจำลองคอมพิวเตอร์ของระบบจัดส่งยาทางท่อลม สำหรับหอผู้ป่วยใน โรงพยาบาลสงขลานครินทร์

Abstract

Songklanagarind Hospital plans to improve the stat drugs delivery system through a pneumatic tube system for inpatient wards. This research aims to analyze the factors affecting the delivery time of stat drugs and determine the level of each factor that minimizes the delivery time of a pneumatic tube system with the application of simulation and optimization methods to support the hospital's decision-making. A computer simulation model of a pneumatic tube system was developed by ProModel 2016 and employed as an experimental tool to investigate which factors involve the delivery time. It was found that the number of loops and carriers. Then, additional experiments were carried out under 3 different numbers of loops which are 1 loop, 2 loops, and 3 loops, respectively. Each experiment sets numbers of carriers between 21 and 40 carriers to find the right amount of carriers that minimize the delivery time to ward and the waiting time of the carrier at the dispensing station. And it was discovered that 1 loop and 39 carriers can achieve both objectives. In addition, the cost of installation and renovation of the pneumatic tube system under each experiment was computed. It was uncovered that an experiment with 1 loop and 39 carriers has a payback period of 14 years and 1 month, the internal rate of return method of 3.56%, and the net present value method of -1,761,467 baht. Even though the economic return is not feasible, Songklanagarind Hospital is a non-profit organization that focuses on the quality of patient care. Thus the renovation of a pneumatic tube system will support the drug delivery becomes faster, the efficiency of patient care be better, and patient mortality rates be lesser. Therefore, a decision with 1 loop and 39 carriers is proposed to Songklanagarind Hospital to deliberate.