Changes in health care and the development of new technologies challenge nurses to evaluate the effectiveness of nursing practices. The application of special equipment and nursing interventions need to be researched based on desired patient outcomes. The authors report the impact on patient outcomes from the use of an air mattress during the recovery period post-Percutaneous Transluminal Coronary Angioplasty (PTCA) and Directional Coronary Atherectomy (DCA).