• Age and ageing · Jan 2015

    Observational Study

    A prospective observational study to investigate the association between abnormal hand movements and delirium in hospitalised older people.

    • Rachel Holt, Elizabeth Ann Teale, Graham Peter Mulley, and John Young.
    • Elderly Care, York Teaching Hospital, NHS Foundation Trust, York, UK.
    • Age Ageing. 2015 Jan 1;44(1):42-5.

    Objectiveto examine the relationship between carphology (aimlessly picking at bedclothes), floccillation (plucking at the air) and delirium in older patients admitted to specialist elderly care wards.Designdaily observation for behaviours of carphology and floccillation embedded within a 'before' and 'after' study.Settingthree specialist elderly care wards in a general hospital.Subjectsolder people admitted to hospital as emergencies.Methodspatients recruited into a delirium prevention study were observed daily for delirium using the confusion assessment method (CAM). Occurrences of carphology and/or floccillation were also recorded. Sensitivity, specificity and positive and negative predictive values for carphology/floccillation for the diagnosis of delirium were calculated. Inpatient mortality rates were compared for patients who did, and did not exhibit features of carphology and/or floccillation.Resultsfour hundred and thirty-seven patients were recruited into the study. One hundred and ten participants experienced an episode of delirium, 21 exhibited behaviours of carphology and/or floccillation. The sensitivity and specificity of carphology and/or floccillation for the diagnosis of delirium were 14 and 98%, respectively; positive likelihood ratio 6.8. Carphology and floccillation were associated with both hyper- and hypo-active delirium subtypes, and occurred early during incident delirium (67% within 2 days of delirium onset). The inpatient mortality rate in patients with carphology/floccillation was double the rate in patients without the behaviours (23.8 versus 11.2%, Fisher's exact test P = 0.16).Conclusionscarphology and floccillation are uncommon physical signs, but their presence is highly suggestive of delirium. The behaviours are unrelated to delirium subtype making their presence particularly useful in the diagnosis of hypo-active delirium.© The Author 2014. Published by Oxford University Press on behalf of the British Geriatrics Society. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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