Abstract
BackgroundDespite the fact that 80% of patients with heart failure are aged more than 65 years, recognition of cognitive impairment by physicians in this population has received relatively little attention. The current study evaluated physician documentation (as a measure of recognition) of cognitive impairment at the time of discharge in a cohort of older adults hospitalized for heart failure. MethodsWe performed a prospective cohort study of older adults hospitalized with a primary diagnosis of heart failure. Cognitive status was evaluated with the Folstein Mini-Mental State Examination at the time of hospitalization. A score of 21 to 24 was used to indicate mild cognitive impairment, and a score of≤20 was used to indicate moderate to severe impairment. To evaluate physician documentation of cognitive impairment, we used a standardized form with a targeted keyword strategy to review hospital discharge summaries. We calculated the proportion of patients with cognitive impairment documented as such by physicians and compared characteristics between groups with and without documented cognitive impairment. We then analyzed the association of cognitive impairment and documentation of cognitive impairment with 6-month mortality or readmission using Cox proportional hazards regression. ResultsA total of 282 patients completed the cognitive assessment. Their mean age was 80 years of age, 18.8% were nonwhite, and 53.2% were female. Cognitive impairment was present in 132 of 282 patients (46.8% overall; 25.2% mild, 21.6% moderate-severe). Among those with cognitive impairment, 30 of 132 (22.7%) were documented as such by physicians. Compared with patients whose cognitive impairment was documented by physicians, those whose impairment was not documented were younger (81.3 vs 85.2 years, P<.05) and had less severe impairment (median Mini-Mental State Examination score 22.0 vs 18.0, P<.01). After multivariable adjustment, patients whose cognitive impairment was not documented were significantly more likely to experience 6-month mortality or hospital readmission than patients without cognitive impairment. ConclusionsCognitive impairment is common in older adults hospitalized for heart failure, yet it is frequently not documented by physicians. Implementation of strategies to improve recognition and documentation of cognitive impairment may improve the care of these patients, particularly at the time of hospital discharge.
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