Reducing Delirium After CABG Surgery With Early Activation and Sleep-Promoting Routines

Inclusion Criteria: * Patients deemed medically suitable for elective CABG surgery * Patients aged 21 years and above * Patients who are English or Mandarin speaking. * Patients who are able to provide consent Exclusion Criteria: * Patients who speak other languages are excluded due to the language requirements of certain outcome measures. * Patients with premorbid severe hearing impairment, severe cognitive impairment, progressive neurological disorders and psychological disorders will be excluded. * Patients with surgical complications resulting in profuse bleeding from any invasive sites, septic shock unresponsive to maximal treatment, and those who are moribund or have an expected mortality within 48 hours will be excluded. * Pregnant women will also be excluded from the study as well. * Patients who develop delirium before initiation of the treatment are also excluded from the study.