Table 33-5
- Patient age
- Baseline low cognitive function
- Depression
- General debility (dehydration, visual or auditory impairment)
- Use of drugs with central nervous system effects
- Opioids (especially meperidine)
- Benzodiazepines (especially lorazepam)
- Anticholinergic drugs (except glycopyrrolate)
- Sleep deprivation
- Unfamiliar environment
- Postoperative pain