Intensive Care Unit, describes an emergency room where doctors, nurses, and other health professionals provide medical care for the patients in the ICU. Intensive care medicine is the medical field of science that deals with disorders of the body and mind. This field is employed by doctors and health care professionals to treat different types of patients with various health conditions. A doctor can specialize in a particular area like cardiac surgery or pediatric surgery, so there are specialists like surgeons who deal with the patients in the case of a medical emergency. ICUs specialize in treating patients in critical condition that may require blood transfusions, surgeries, etc.