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Diagnosis and management of adult primary angiitis of the central nervous system: an international survey on current practices.
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Edité par CCSD -
International audience. Background: Primary angiitis of the central nervous system (PACNS) is a rare disease, for which no validated guidelines exist. We report the findings of a survey on the clinical practice of physicians who manage adults with PACNS.Methods: An online survey was distributed through neurology, internal medicine, and rheumatology societies in Canada and Europe. Participants who were directly involved as treating physicians for at least two adult patients with PACNS were eligible for the survey.Results: Ninety-six physicians completed the survey. Most participants were neurologists (n = 38, 40%), internists (n = 34, 35%) or rheumatologists (n = 22, 23%). Participants obtained a CNS biopsy in a median of 25% (IQR: 5-50%) of suspected PACNS cases. When determining the degree to which eight scenarios justified a CNS biopsy, participants achieved fair inter-rater agreement (Gwet's AC2 0.30, 95% CI 0.23-0.41). For induction therapy, 81 (84%) participants reported using glucocorticoids and cyclophosphamide in > 50% of patients. After obtaining remission, 85 (89%) participants systematically introduced or maintained immunosuppressive therapy. Glucocorticoids were prescribed for a median of 12 months. Maintenance therapy with another immunosuppressant was continued for a median of 24 months. In patients who achieved remission, we explored how eight scenarios with different imaging and CSF results supported an increase in treatment. Inter-rater agreement was substantial if the patient was symptomatic (0.66, 95% CI 0.58-0.80) and moderate (0.50, 95% CI 0.45-0.60) if asymptomatic.Conclusion: This survey illustrates current real-world management of PACNS and emphasizes several areas for which physicians still lack study-based evidence and/or clinical practice guidelines.
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