ABSTRACT
Objective: To discuss the key points of reconstruction from the surgical intensive care unit (SICU) to the negative pressure isolation ward which can treat patients with novel coronavirus pneumonia (NCP, COVID-19). Methods: The key points of the reconstruction are as follows: establishment of "three zones and two passages", transformation of the ventilation system, process management of personnel access room, and introduction of the visual management concept. Results: The reconstructed SICU can maintain the original space area. As for space layout, there are separate clean zone, semi-polluted zone and polluted zone as well as a separate passage for patients and medical personnel respectively, without the two groups of people contacting each other. To achieve positive air pressure in the clean zone, negative air pressure in the semi-polluted zone is -5 Pa to -10 Pa, and negative air pressure in the patient zone is -10 Pa to -20 Pa. And we ensure that the pressure difference (negative pressure) in adjacent rooms with the same pollution level is not less than 5 Pa. Under normal circumstances, the pressure can be switched to positive one for admission of general ICU patients. Results: Through the reconstruction, the SICU can meet the requirements of treatment of COVID-19 patients. The main points of reconstruction are space layout and the air conditioning and ventilation system.