Preoperatively, patients and attendants explained about the precautions and measures (hand hygiene, wearing a mask, social distancing, restrictions of family members, and visitors in hospital) recommended by hospital authorities because of COVID-19 pandemic. The patients were provided with a surgical mask throughout the perioperative period. The patient was transferred to an operation theatre only on-call from the operation theatre to avoid overcrowding. The individual operating rooms have separate air-handling units with high-efficiency particulate air (HEPA) filters.