What is the main differentiating point of the three R sub-categories?
The differentiation of the subcategories is based on the intensity of interventions appropriate for the patient. For instance, an R3 designated patient would not request, nor be expected to benefit from intubation and chest compression. Example: A person in a monitored CCU setting, with a correctable rhythm disturbance, and a serious chronic illness, but who wishes to live longer to accomplish some important goals, might have this Designation so that the symptomatic rhythm disturbance could be treated. Treatment could include cardioversion or medication. Treatment would not include chest compression or intubation if the patient suffered cardiopulmonary arrest. In the old Code Level system, this differentiation could not be easily incorporated.