Pre-operative hemoglobin level and use of sedative-hypnotics are independent risk factors for post-operative delirium following total knee arthroplasty.

BMC Musculoskelet Disord · 2020 · PMC7196215 · PMID 32359366

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There are also reports of subsyndromal delirium, which are not easily identified, but may be significant in terms of risks of falls and development of future dementia [ 42 , 43 ].

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