['Heart failure is one of the most common und costly chronic diseases. Patient education is an important part of heart failure therapy. Rehabilitation aims to improve self-management abilities and the course of the disease. A structured heart failure education program was established to create knowledge about the disease and to implement a disease friendly behavior. The effectiveness was tested in a randomized controlled design.', 'Patients were cluster randomized -assigned to an intervention group or a control group at the beginning of a rehabilitation. Both received a rehabilitation specifically geared to heart-failure-patients. The intervention group received additionally the education program, the control group a single lecture on the disease. At the end of rehabilitation and 6 months later the knowledge and integrity of the recommended self-tests have been checked. In addition the disease severity and pharmacotherapy were determined.', 'Both groups showed improvements in disease status. Participants of the education program had a sustained higher knowledge, were better adjusted to medication after 6 months and documented their self-tests more frequently.'] Does [ Patient education in heart failure improve disease-related knowledge and behavior during cardiac rehabilitation ]?