Does preoperative cognitive impairment increase the risk of postoperative delirium and major adverse outcomes in elective surgical patients ≥70 years?
Preoperative cognitive impairment is present in approximately 20% of elderly elective surgical patients and serves as a risk factor for postoperative delirium and adverse outcomes.
One-fifth of elective surgical patients ≥70 years present to surgery with preoperative cognitive impairment. These patients are at increased risk of postoperative delirium and major adverse outcomes.
Weiss et al. (Mon,) studied this question.
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