Patients with rheumatoid arthritis are associated with an increased risk for heart failure, particularly heart failure with preserved ejection fraction.
Current research has not found an association between rheumatoid arthritis and appendicitis, but some studies found a link between other autoimmune diseases and appendicitis.
Patients with late-onset rheumatoid arthritis experienced greater functional impairment over 5 years, compared against those with younger-onset disease.