An intensive care unit is a special hospital department that provides continuous monitoring and advanced treatment for seriously ill or injured patients. The intensive care unit has specialized staff, equipment, and resources to support patients with life-threatening conditions. In medicine, it is used to stabilize critical patients and give them the highest level of care.
Source:
Intensive care unit (ICU). Medline Plus. https://medlineplus.gov/ency/imagepages/19957.htm