ICU is the abbreviation of Intensive Care Unit, also known as Intensive Care Unit, i.e. Intensive Care Unit, ICU is generally divided into comprehensive and specialized. 1. Specialized: ICU is a specialized unit set up for the observation and treatment of critically ill patients, which can be subdivided into pediatric ICU, cardiology ICU, respiratory ICU and so on according to different types of patients. This kind of specialized intensive care unit generally exists in large hospitals. 2. Comprehensive: Most hospitals have established comprehensive ICUs, which are hospital wards that focus on monitoring and rescuing critically ill patients. ICU can improve the quality of life and survival rate, is the embodiment of medical strength on behalf of the important standards of modern hospitals.