1, A/C (assisted/controlled ventilation): when the patient has spontaneous breathing, the machinery is started with the breathing, and once the spontaneous breathing does not occur within a certain period of time, the mechanical ventilation is automatically switched from assisted to controlled ventilation. It belongs to intermittent positive pressure ventilation.
2, SIMV (Synchronized Intermittent Command Ventilation): The ventilator receives the signal of negative pressure in the airway due to spontaneous respiration at a certain intermittent time, and sends out the airflow synchronously, and carries out assisted ventilation intermittently.
3, SPONT (independent breathing): the work of the ventilator is controlled by the patient's independent breathing.
In modern clinical medicine, the ventilator as an effective means of artificially replacing the function of voluntary ventilation, has been commonly used in respiratory failure due to various causes, anesthesia and respiratory management during major surgery, respiratory support therapy and emergency resuscitation, and occupies a very important position in the field of modern medicine. The ventilator is a medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong the patient's life.