In this study, the incidence of patient-ventilator asynchronism in two groups of patients was studied when the ventilator was prompted by the PVA asynchronism analysis function

Incidence of patient-computer dyssynchrony events: defined as the proportion of patient-computer dyssynchrony events in the total number of cycles during the patient trial. The observation period began 48 hours after the participants met the inclusion and exclusion criteria and signed the informed consent, and the data collection was stopped 48 hours later.

Inclusion Criteria:

1. Adults (≥18 years) requiring invasive mechanical ventilation
2. Patiens had spontaneous breathing;
3. Agreed to participate in the trial and signed an informed consent

Exclusion Criteria:

1. Patients with contraindications to esophageal catheter insertion and inability to monitor esophageal pressure;
2. pregnant women;
3. patients with severe central nervous system damage or neuromuscular related diseases;
4. Participating in other clinical research projects;
5. Patients deemed unsuitable by the investigator