Because patients on ventilators are more severely ill, more indicators need to be monitored. Routine vital signs such as the patient’s blood pressure, heart rate, respiration, temperature, and mental status need to be monitored. In addition, it is also necessary to monitor some of the specialized parameters of the ventilator, mainly including pressure parameters such as airway pressure, peak airway pressure, airway plateau pressure, average airway pressure, and tidal volume parameters such as tidal volume, expiratory minute ventilation, expiratory frequency, and air leakage. If there is any abnormality in the work of the ventilator or any fluctuation in the patient’s vital signs, it is necessary to report to the doctor immediately for treatment.