ICU stands for Intensive Care Intensive Unit and is a specialized place for the treatment of critically ill patients. In the ICU, critically ill patients are managed and treated centrally. The ICU has a spacious environment and each patient has special monitoring equipment to keep track of the patient’s vital signs and changes in their condition. It is also equipped with special resuscitation and treatment equipment, such as defibrillator, fiberoptic bronchoscope, ventilator, dialysis machine, etc. It is always ready for blood gas analysis, deep vein placement, tracheal intubation and other resuscitation treatments. The intensive care ward is equipped with sufficient, professionally trained doctors and nurses so that patients can receive timely and professional treatment. In addition to comprehensive intensive care units, there are also specialized intensive care units, such as pediatric intensive care units in pediatrics, cardiovascular intensive care units in cardiovascular medicine, neurology intensive care units in neurology, and respiratory intensive care units in respiratory medicine.