You are a recent graduate of the School of Nursing and are being oriented to your new position on a cardiothoracic stepdown unit at another hospital. In hopes of improving patient outcomes, bringing down postoperative complication and mortality rates, and decreasing length of stay in the hospital, the unit is investigating changing its practices in order to improve glycemic control in cardiac surgery patients. There has been growing concern among nurses and physicians over the association between poor glycemic control and poor outcomes following cardiac surgery (in non-diabetic as well as diabetic patients). The nurse manager has asked you to do a literature search on the topic and give a presentation at the next in-service conference.