Cognitive impairment on a rehabilitation service

Abstract

Many techniques of rehabilitation require that the patient have intact cognition. This study determined the frequency of impaired cognition among the predominantly elderly patients on a community teaching hospital acute rehabilitation ward. The Cognitive Capacity Screening Examination (CCSE) was administered to 81 patients (ages 44 to 99, means 77, male:female 29:52). That 52 patients (64%) scored below 20 on the CCSE suggests significant cognitive impairment. The cognitively impaired patients were older than those with normal CCSE scores (p less than 0.05) and 19 patients had a prior history of chronic dementia. The physicians of 12 of the cognitively impaired patients (15% of all patients screened) were unaware of the impairment prior to their CCSE. Cognitively impaired patients scored similarly irrespective of a prior history of similar impairment (CCSE scores 10.2 +/- 1 for those without a prior history of dementia, 7.3 +/- 1.4 for those with prior dementia, p greater than 0.05). Physicians were more likely to be aware of a patient's current cognitive problems if the patient had a prior history of dementia (19/19 vs 21/33, p less than 0.01). The utility of employing a routinely administered CCSE to all patients accepted by a rehabilitation ward is emphasized. The time, cost, and effort of routinely performing such tests are negligible, and the potential benefits are considerable.