(1) Class I operating room: the sterile clean operating room, which mainly accepts operations such as brain, heart, and organ transplants.
(2) Class II operating room: the sterile operating room, which mainly accepts aseptic operations such as splenectomy,open reduction of
closed fractures, intraocular surgery, and thyroidectomy.
(3) Class III operating room: that is, the operating room with bacteria, which accepts operations on stomach, gallbladder, liver, appendix,
kidney, lung and other parts.
(4) Category IV operating room: the infection operating room, which mainly accepts surgery for appendix perforation, peritonitis, tuberculous abscess, abscess incision and drainage.
(5) Category V operating room: the special infection operating room, which mainly accepts the operation of Pseudomonas aeruginosa, gangrene bacillus, tetanus and other infections. According to different specialties, the operating rooms can be divided into general surgery, orthopedics, obstetrics and gynecology, brain surgery, cardiothoracic surgery, urology, burns, and ENT surgery