Minimising the number of cancellations at the time of a severe lack of postanesthesia care unit beds or nurses

A deficiency of the postanesthesia care unit (PACU) beds or nurses may cause delays in operating rooms (ORs) and increase number cancellations. Some disruptions like COVID-19 pandemic this deficiency. This paper investigates two integrated OR PACU scheduling problems; one with few beds, other nurses. For each problem, a mathematical model matheuristic are proposed for minimising To best our knowledge, it is first study that implications severe lack on The matheuristics hybridise decomposition instance into some small-sized sub-instances variable neighbourhood search algorithm. main advantages these methods their flexibility to incorporate many problem details (such as step-wise demand nurses) solve any large-scale problem. Numerical results data set 22 ORs show an increasingly capacity there progressively greater benefit than initial solutions. Moreover, influence overtime recovery improving situation.