期刊
ANNALS OF INTERNAL MEDICINE
卷 160, 期 8, 页码 526-+出版社
AMER COLL PHYSICIANS
DOI: 10.7326/M13-1927
关键词
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资金
- National Institute on Aging [P01AG031720, K07AG041835, R01AG030618, K24AG035075, K01AG033643]
- Milton and Shirley F. Levy Family Chair
Background: Quantifying the severity of delirium is essential to advancing clinical care by improved understanding of delirium effect, prognosis, pathophysiology, and response to treatment. Objective: To develop and validate a new delirium severity measure (CAM-S) based on the Confusion Assessment Method. Design: Validation analysis in 2 independent cohorts. Setting: Three academic medical centers. Patients: The first cohort included 300 patients aged 70 years or older scheduled for major surgery. The second included 919 medical patients aged 70 years or older. Measurements: A 4-item short form and a 10-item long form were developed. Association of the maximum CAM-S score during hospitalization with hospital and posthospital outcomes related to delirium was evaluated. Results: Representative results included adjusted mean length of stay, which increased across levels of short-form severity from 6.5 days (95% CI, 6.2 to 6.9 days) to 12.7 days (CI, 11.2 to 14.3 days) P for trend < 0.001) and across levels of long-form severity from 5.6 days (CI, 5.1 to 6.1 days) to 11.9 days (CI, 10.8 to 12.9 days) (P for trend < 0.001). Representative results for the composite outcome of adjusted relative risk of death or nursing home residence at 90 days increased progressively across levels of short-form severity from 1.0 (referent) to 2.5 (CI, 1.9 to 3.3) (P for trend < 0.001) and across levels of long-form severity from 1.0 (referent) to 2.5 (CI, 1.6 to 3.7) (P for trend < 0.001). Limitation: Data on clinical outcomes were measured in an older data set limited to patients aged 70 years or older. Conclusion: The CAM-S provides a new delirium severity measure with strong psychometric properties and strong associations with important clinical outcomes.
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