23 Epidemiology of catatonia in a large dataset. (28th May 2019)

• Record Type: Journal Article
• Authors: Rogers, Jonathan P; Pollak, Thomas A; Begum, Nazifa; Griffin, Anna; Patel, Rashmi; Pritchard, Megan; Broadbent, Matthew; Blackman, Graham; Kolliakou, Anna; Stewart, Robert; Nicholson, Timothy RJ; David, Anthony S
• Is Part Of: Journal of neurology, neurosurgery and psychiatry. Volume 90(2019)Supplement 2
• Page Start: A11
• Page End: A11
• Publication Date: 2019-05-28
• Subjects: Neurology -- Periodicals; Nervous system -- Surgery -- Periodicals; Psychiatry -- Periodicals; 616.8
• DOI: 10.1136/jnnp-2019-BNPA.23
• Languages: English
• ISSNs: 0022-3050

Abstract

Abstract : Objectives/Aims: Catatonia is an important neuropsychiatric disorder with a high morbidity and mortality. However, due to a perception that it is very infrequent and because of the acuity of the patients, it has remained poorly studied and research has often been confined to small groups. We aimed to establish the demographic, disease-related variables and blood-based biomarkers for catatonia in a large dataset. Methods: We used the Clinical Records Interactive Search (CRIS) system hosted at the NIHR Maudsley Biomedical Research Centre to search the clinical records for patients with catatonia. An initial free-text search was refined by use of a natural language processing app. The results of the app were validated by three of the authors, who included patients in the analysis only if a clinician had made a diagnosis of catatonia and two or more items of the Bush-Francis Catatonia Screening Instrument were in evidence. Demographics, disease-related variables and blood-based biomarkers could then be extracted for these patients and compared, where relevant, to non-catatonic psychiatric patients. Results: The natural language processing app extracted the records of 2766 patients with at least one mention of catatonia in their records. The majority of cases identified by the app could be validated by the researchers. A high proportion of patients had more than one episode of catatonia. Full results will be available in time for the presentation. Conclusions: This study demonstrates that catatonia is not very rare, even relying on clinician identification. The frequency of recurrence is interesting, as it suggests that catatonia might indicate an underlying trait, rather than merely a transient state.