ICU Patients Requiring Invasive Mechanical Ventilation

This study is a prospective, single-center clinical study to evaluate the advantages, extensibility and safety of hydromorphone as an analgesic drug in ICU, and to compare it with remifentanil, a traditional sedative drug. These conclusions can guide us to understand the characteristics of analgesic drugs, carry out appropriate pain management, improve the status of ICU patients, and improve the quality of life of patients.