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Orthostatic symptoms predict functional capacity in chronic fatigue syndrome: implications for management

Lookup NU author(s): Emerita Professor Julia Newton

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Abstract

Design: Cross sectional questionnaire survey. Setting: Specialist CFS Clinical Service. Subjects: Ninety-nine Fukuda diagnosed CFS and 64-matched controls. Main outcome measures: Symptom and functional assessment tools completed and returned by post included; PROMIS HAQ (Patient-Reported Outcomes Measurement Information System, Health Assessment Questionnaire), CFQ (Cognitive Failures Questionnaire), FIS (Fatigue Impact Scale) and OGS (Orthostatic Grading Scale) assessment tools. Results: CFS patients experience greater functional impairment than controls [mean (95% CI) PROMIS HAQ scores CFS 36 (31-42) vs. controls 6 (2-10); P < 0.0001], especially in the functional domains of activities and reach. Poorer functional ability impairment is significantly associated with greater cognitive impairment (P = 0.0002, r = 0.4), fatigue (P < 0.0001, r = 0.5) and orthostatic symptoms (P < 0.0001, r = 0.6). However, only orthostatic symptoms (OGS) independently associated with functional impairment (beta = 0.4, P = 0.01). Conclusions: Treatment of orthostatic symptoms in CFS has the potential to improve functional capacity and so improve quality of life.

Publication metadata

Author(s): Costigan A, Elliott C, McDonald C, Newton JL

Publication type: Article

Publication status: Published

Journal: QJM: An International Journal of Medicine

Year: 2010

Volume: 103

Issue: 8

Pages: 589-595

Print publication date: 09/06/2010

ISSN (print): 1460-2725

ISSN (electronic): 1460-2393

Publisher: Oxford University Press

URL: http://dx.doi.org/10.1093/qjmed/hcq094

DOI: 10.1093/qjmed/hcq094

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