AUTHOR=Serrat Francesc , Iglesias-Gónzalez Maria , Sanagustin David , Etxandi Mikel , de Pablo Joan , Cuevas-Esteban Jorge TITLE=Catatonia and Cognitive Impairments: A Systematic Review JOURNAL=Frontiers in Psychiatry VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2022.877566 DOI=10.3389/fpsyt.2022.877566 ISSN=1664-0640 ABSTRACT=Background

Catatonia is an underdiagnosed and undertreated neuropsychiatric syndrome characterized by catalepsy, negativism, mutism, muscular rigidity, and mannerism, often accompanied by autonomic instability and fever. Although there is growing interest in studying cognitive impairments before and after catatonia, little is known about the cognitive features of the syndrome.

Methods

This systematic review was registered at PROSPERO (CRD42022299091). Using a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) approach, we searched PubMed, ScienceDirect, and PsycArticles using a combination of the terms “Catatonia” and “Cognitive impairment” and “Executive function” and “Frontal lobe” and “Parietal lobe.” Studies included original research articles enrolling patients with catatonic syndrome according to specified criteria. Fourteen studies were deemed relevant for inclusion. The abstraction form included age, assessment during acute episode, associated diagnosis, assessment procedure, and cognitive domains. Outcome measures were extracted.

Results

Executive functions and visuospatial abilities proved to be the most investigated domains. A great heterogeneity has been observed in the assessment tools used among the 14 evaluated studies. Findings showed that catatonic patients had worse performance than healthy and non-catatonic psychiatric patients in frontal and parietal cortical functions.

Conclusion

Because of the small number of studies in such heterogeneous areas and significant methodological limitations, the results should be regarded with caution. Future research assessing cognitive impairments on catatonic patients is needed.

Systematic Review Registration

[https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=299091], identifier [CRD42022299091].