ICU stands for Intensive Care Unit. It is a specialized unit within a hospital or medical facility that provides high-quality, constant monitoring and care to patients with serious illnesses or injuries who require close observation and support from medical equipment. The ICU is staffed by highly trained professionals such as critical care nurses, respiratory therapists, and doctors specializing in intensive care medicine. Patients are often admitted to the ICU after surgery, serious accidents or illnesses that require constant monitoring of vital signs like heart rate, blood pressure, and oxygen levels. The goal of treatment in the ICU is to stabilize the patient's condition so they can recover and eventually be moved to a less intensive care setting within the hospital.