Preoperative individualized education intervention reduces delirium after cardiac surgery: a randomized controlled study

Delirium, known as the severe disorder of attention and cognition, always happens among elderly patients after the surgery (1). Significantly increasing the mortality and medical burden, delirium is a common complication for patients undergoing cardiac surgery, and the incidence of delirium is estimated as 26–52% (2). Due to its high prevalence and potential hazard, previous studies have been launched to find its cause (3), risk factors (4), prevention measures (5,6), and treatment (7). However, the problems with delirium remain high and tough for patients undergoing cardiac surgery