Patient
The study was designed as a retrospective observational study and
approval to conduct this study was obtained from Ethics Committee of
Shanghai Changhai Hospital. This study included a consecutive series of
patients in the department of cardiothoracic surgery center between
January 2012 and December 2019 who
were underwent OPCABG treatment. Excluded from the study were patients
who preoperatively were treated with antipsychotic drugs, and those with
a history of mental problem, head injury, neurological dysfunction,
patients conversion to CPB and those who underwent emergency operations
or
reoperations1,22-25.