This branch of medicine deals with the diagnosis and management of serious, life-threatening conditions that may require sophisticated life support and intensive monitoring. Critical care medicine encompasses the diagnosis and treatment of a wide variety of clinical problems representing the extreme of human disease. Critically ill patients require intensive care by a coordinated team. Critical Care Medicine covers the diagnosis and treatment of a wide range of clinical problems representing the extreme of human disease. Internal Medicine-Critical Care Medicine blends the Internal Medicine diagnostic paradigm with Emergency Medicine’s therapeutic imperative. IM-CCM trained internists manage the melding of medical and surgical patients in the ICU. Intensive care is provided in a specialized unit called the intensive care unit (ICU) or critical care unit (CCU).