The document discusses the concept of critical care including the intensive care team, critical care nursing, the seven Cs of critical care nursing, the roles of critical care nurses and units. It describes the organization, staffing, equipment and facilities required for an intensive care unit. It discusses ICU admission and discharge criteria including prioritization models based on patient stability and likelihood of benefit, as well as diagnosis-based models. The goal is to provide intensive treatment and monitoring to critically ill patients who can benefit from care that can't be delivered elsewhere.