Welcome to the Intensive Care Unit.
This is not a place you plan to visit. You may be surprised to find yourself here. But if you are really sick, this is the place to be. Your local intensive care unit is fully staffed, all the time.
Critical care medicine is care for unstable patients with physical ailments. It is for patients with blood pressure that is so low that they would have passed out if it were not for the medications to keep blood flowing to vital organs; for patients who are struggling to breath such that they now require a machine to breathe for them; for patients after emergency surgery for severe trauma and have multiple organ injuries.