RESUMENEn la investigación se analizó la eficiencia del proceso de gestión de inventarios en un sistema multinivel con M-proveedores, una bodega central (BC), y cuatro minoristas para la cadena de abastecimiento de medicamentos del Hospital Universitario de la Samaritana, con el objetivo de determinar las cantidades adecuadas de pedido desde la bodega central hacia sus proveedores y desde las farmacias auxiliares hacia la bodega central, minimizando el costo total de inversión en inventario y a su vez el porcentaje del número de días con unidades faltantes. De los resultados computacionales obtenidos en la validación inicial se concluye que la aplicación del modelo propuesto genera un ahorro del 50% en los costos totales de inversión y 95 % en el número de días con faltantes para las farmacias auxiliares. Palabras claves: Cadena de abastecimiento, costo de inversión en inventario, gestión de inventarios, porcentaje de unidades faltantes, sistema de inventarios 1 almacén y N-minoristas. ABSTRACTThis research analyzed the efficiency of inventory management process in a multilevel system with M-suppliers, one warehouse (BC), and four retails for drugs supply chain at the University Hospital of the Samaritana, in order to determine the appropriate order quantities from the central warehouse to suppliers and from auxiliary drugstores to the central warehouse, minimizing the total cost of inventory investment and, in turn, the percentage of the number of days with missing quantities. With regard to the computational results obtained in the initial validation, it is concluded that the application of the proposed model generates a saving of 50% in the total investment costs and 95% in the number of days with missing quantities for auxiliary pharmacies.
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