Factors associated with recovery from early postoperative delirium.

Delirium occurs in 14% to 56% of postoperative, hospitalized elderly persons, making it one of the most common postoperative complications for the older patient. The aim of this study was to determine factors associated with recovery of delirium from postoperative day one (POD 1) to postoperative day two (POD 2). The hypothesis was that those with less pain are more likely to recover from delirium by POD 2.