Exploring Factors Associated With Cognitive Impairment in Rheumatoid Arthritis.

Area of Science:

• Rheumatology
• Neuroscience
• Gerontology

Background:

• Rheumatoid Arthritis (RA) frequently impacts cognition, but underlying risk factors remain unclear.
• Understanding these factors is crucial for managing RA patients' overall health and quality of life.

Purpose of the Study:

• To investigate the associations between various clinical characteristics and cognitive impairment in a cohort of Rheumatoid Arthritis patients.
• To identify potential modifiable risk factors contributing to cognitive decline in RA.

Main Methods:

• A longitudinal cohort of 145 Rheumatoid Arthritis patients from the Veterans Affairs Puget Sound Health Care System was analyzed.
• Cognitive function was assessed using the Saint Louis University Mental Status (SLUMS) exam.
• Multivariable linear regressions examined associations between clinical factors (physical function, symptoms, disease characteristics, comorbidities) and SLUMS scores, controlling for demographics.

Main Results:

• A significant prevalence of cognitive impairment was observed: 29% normal cognition, 57% mild cognitive impairment, and 14% dementia.
• Lower cognitive scores (SLUMS) were independently associated with poorer physical performance, self-reported exhaustion, pain, disability, and difficulty sleeping.
• These associations remained significant after adjusting for age, sex, and education.

Conclusions:

• Cognitive impairment is highly prevalent in veterans with Rheumatoid Arthritis.
• Modifiable clinical factors, including physical function, fatigue, pain, disability, and sleep disturbances, are associated with cognitive dysfunction in RA.
• Further research is needed to establish causality and develop interventions targeting these factors to improve cognitive health in RA patients.