There are too many complex ones, such as BIS, Narcotrend, myosin monitors, invasive arterial and venous blood pressure monitors, end-expiratory carbon dioxide monitors, blood gas analyzers, blood recyclers, floating catheter equipment, pulmonary artery pressure monitoring equipment, portable ultrasound (for vascular puncture and local nerve blocks), neurostimulators, and, most importantly, equipment for difficult airways, such as scleroscopes, fibreoprostheses, and other devices. , such as rigid bronchoscopes, fiberscopes, visual laryngoscopes, laryngeal masks, and so on. The anesthesia department that carries out extracorporeal circulation will also have equipment for extracorporeal circulation, and in some hospitals the anesthesia department can also carry out tracheotomy. To carry out the construction of information technology hospitals, there will be anesthesia information system computer terminals and so on.