Inventory Management At Hospitals To Minimize Platelet Wastage
Open Access
- Author:
- Rajendran, Suchithra
- Graduate Program:
- Industrial Engineering
- Degree:
- Master of Science
- Document Type:
- Master Thesis
- Date of Defense:
- None
- Committee Members:
- Arunachalam Ravindran, Thesis Advisor/Co-Advisor
- Keywords:
- Platelets
wastage
inventory management
HAPP
WAPP
SAPD
TC - Abstract:
- This research proposes inventory policies for the management of platelets at hospitals. It has been shown that a significant amount of platelets is wasted in hospitals due to its short expiration time after collection. Since the demand of the platelets is highly uncertain, the safety stock of platelets is kept extremely high to mitigate the risk of shortage. Hence, the objective of this research is to minimize the platelet wastage at the same time maintaining a specified service level. Finite and infinite time horizon inventory models are developed to determine the order quantity and the time to order platelet such that wastage and shortage are reduced. The robustness of the solutions is tested by performing a sensitivity analysis. The lead time and review periods are varied in both inventory models. In addition, in the finite time horizon model, the effect of different cost scenarios on the four criteria is studied using simulation. In the infinite time model, the service levels are varied to analyze their effect on the criteria. For the sensitivity analysis, four criteria are considered; Wastage as Percentage of Procurement (WAPP), Holding as Percentage of Procurement (HAPP), Shortage as Percentage of Demand (SADP) and Total Cost (TC). The results of the finite time horizon model indicate that when more priority is given to reduce shortage, SAPD decreases while WAPP, HAPP and TC increase. The results of the infinite time horizon model indicate that when the service level increases, SAPD decreases and WAPP, HAPP and TC increase.