A computer-implemented method for managing operating-room resources in a hospital includes the steps of receiving at least one surgery request, identifying the resources required for surgery associated with the surgery request, capturing initial data on availability of the resources, capturing initial patient data, and establishing a pre-scheduled operating-room plan based on an initial optimization, and the further steps of capturing current data on availability of the resources, capturing current patient data and establishing a current operating-room plan based on a current optimization. A computer-based system for managing operating-room resources in a hospital and a modular computer-based system for managing operating-room related processes in a hospital are also disclosed.