It comprises of Emergency/ Casualty, Intensive Care Units, High Dependency Units, or a hybrid HDU along with isolation beds. In emergency and casualty, all medical, surgical, or accidental cases which need immediate interventions are coming for life saving and other emergency interventions. Usually an ICU patient requires one to one nursing care, whilst a high dependancy patient requires one nurse to every two patients. In contrast, on a normal ward two qualified nurses often care for up to 30 patients between them. HDU, or high-dependency unit, is a specialist hospital unit exclusively for patients requiring intensive monitoring and treatment, but not up to the extremity of the critical patients in an ICU. HDU provides more extreme nursing care to the patients than the general ward. What Is The Full Form Of HDU In Medical? HDU full form in medical term is High Dependency Unit. There are usually three wards in a hospital. The first one is a general ward, where doctors keep patients for general observation and treatment.