Optimization of the cardiac delirium index by including age, decrease in butyrylcholinesterase actitivity, preoperative HbA1c, and postoperative hemoglobin levels: results of a secondary analysis of a prospective observational study - Zajonz, Thomas S.; Edinger, Fabian; Markmann, Melanie; Gräb, Katrin; Sander, Michael; Kunzemann, Christian; Koch, Christian; Schneck, Emmanuel (Frontiers in Cardiovascular Medicine, 2024)