ICU, or intensive care unit, is a specialized healthcare area in hospitals where patients with severe or life-threatening injuries or illnesses receive constant monitoring, medical care, and support. ICU patients often require advanced medical technologies and interventions, such as ventilators, cardiac monitors, and intravenous medications. The primary goal of ICU care is to stabilize and support patients until they are able to recover and be transferred to a lower level of care. ICU research focuses on improving outcomes for critically ill patients, such as reducing complications, improving survival rates, and enhancing the quality of care provided in these high-intensity medical settings.