Duke University researchers have found that several factors appear to significantly predict cognitive recovery following cardiac surgery. These included:

More patient education.
Baseline cognitive index.
Less CI decline at 6 weeks.
More activities of daily living (ADLs) at 6 weeks.

The research team suggests that the link between cognitive recovery and ADLs be explored further because it was a potentially modifiable predictor.

Abstract: Anesthesia & Analgesia, February 2013.