Cardiac Rehab: More Is Better. Medicare recipients are entitled to 36 cardiac rehab sessions following hospitalization for heart attacks, bypass surgery, or many other heart-related events, yet most eligible patients end up attending far fewer sessions or none at all.essions are typically held two or three times a week for several months after a heart-related hospital discharge, but only about 10% to 20% of patients who could benefit from the programs actually attend them, rehab specialist David Prince, MD, of Montefiore Medical Center tells WebMD.
1 The science of life and of living organisms, including their structure, function, growth, origin, evolution, and distribution. It includes botany and zoology and all their subdivisions.  The life processes or characteristic phenomena of a group or category of living organisms: the biology of fungi.
Medical Definition of STRUCTURE. 1. : something (as an anatomical part) arranged in a definite pattern of organization. 2. 3. : the aggregate of elements of an entity in their relationships to each other.xamples of STRUCTURE. 1  They studied the compound's molecular structure. 2  The film had a simple narrative structure. 3  the structure of a plant. 4  the social structure of a college campus. 5  changes to the company's power structure. 6  The structure was damaged by fire. 7  Children need a lot of structure in their lives.