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• W4200138434 abstract "Abstract Objectives Delirium frequently arises in older demented and non‐demented patients in postoperative, clinical settings. To date, the underlying pathophysiological mechanisms remain poorly understood. Monoamine neurotransmitter alterations have been linked to delirium and cognitive impairment. Our aim was to investigate if this holds true in cognitively normal and impaired patients experiencing delirium following hip surgery. Methods Monoamines and metabolites were measured in plasma samples of 181 individuals by means of reversed‐phase ultra‐high‐performance liquid chromatography with electrochemical detection. Delirium and delirium severity were scored with the Confusion Assessment Method and Delirium Rating Scale‐Revised‐1998. Cognitive function was assessed using the Informant Questionnaire on Cognitive Decline and the Mini‐Mental State Examination, multimorbidity with the Charlson Comorbidity Index. Results Plasma 5‐hydroxyindoleacetic acid (5‐HIAA), the major metabolite of serotonin (5‐HT), was significantly higher in delirious and non‐delirious cognitively impaired subjects as compared to control individuals without delirium and cognitive impairment ( p < 0.001 and p = 0.007), which remained highly significant after excluding patients taking psychotropic medication ( p < 0.0001 and p = 0.003). No significant differences were found for cognitively normal delirious patients, although serotonergic levels were numerically higher compared to control counterparts. Conclusions Our findings indicate a general serotonergic disturbance in delirious and non‐delirious postoperative patients suffering from cognitive impairment. We observed a similar, but less pronounced difference in delirious patients, which suggests serotonergic disturbances may be further aggravated by the co‐occurrence of delirium and cognitive impairment." @default.
• W4200138434 created "2021-12-31" @default.
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• W4200138434 date "2022-01-05" @default.
• W4200138434 modified "2023-09-25" @default.
• W4200138434 title "Plasma 5‐HIAA activity indicative of serotonergic disturbances in cognitively impaired, elderly patients experiencing postoperative delirium" @default.
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• W4200138434 doi "https://doi.org/10.1002/gps.5677" @default.
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