Dural arteriovenous fistulas in cerebral venous thrombosis: Data from the International Cerebral Venous Thrombosis Consortium

BACKGROUND AND PURPOSE

To explore the prevalence, risk factors, time correlation, characteristics and clinical outcome of dural arteriovenous fistulas (dAVFs) in a cerebral venous thrombosis (CVT) population.

METHODS

We included patients from the International CVT Consortium registries. Diagnosis of dAVF was confirmed centrally. We assessed the prevalence and risk factors for dAVF among consecutive CVT patients and investigated its impact on clinical outcome using logistic regression analysis. We defined poor outcome as modified Rankin Scale score 3-6 at last follow-up.

RESULTS

dAVF was confirmed in 29/1218 (2.4%) consecutive CVT patients. The median (interquartile range [IQR]) follow-up time was 8 (5-23) months. Patients with dAVF were older (median [IQR] 53 [44-61] vs. 41 [29-53] years; p < 0.001), more frequently male (69% vs. 33%; p < 0.001), more often had chronic clinical CVT onset (>30 days: 39% vs. 7%; p < 0.001) and sigmoid sinus thrombosis (86% vs. 51%; p < 0.001), and less frequently had parenchymal lesions (31% vs. 55%; p = 0.013) at baseline imaging. Clinical outcome at last follow-up did not differ between patients with and without dAVF. Additionally, five patients were confirmed with dAVF from non-consecutive CVT cohorts. Among all patients with CVT and dAVF, 17/34 (50%) had multiple fistulas and 23/34 (68%) had cortical venous drainage. Of 34 patients with dAVF with 36 separate CVT events, 3/36 fistulas (8%) were diagnosed prior to, 20/36 (56%) simultaneously and 13/36 after (36%, median 115 [IQR 38-337] days) diagnosis of CVT.

CONCLUSIONS

Dural arteriovenous fistulas occur in at least 2% of CVT patients and are associated with chronic CVT onset, older age and male sex. Most CVT-related dAVFs are detected simultaneously or subsequently to diagnosis of CVT.

Education Research: An arts-based curriculum for neurology residents

OBJECTIVE

To determine the feasibility and educational value of an arts-based curriculum for neurology residents, with the following specific learning objectives: to enhance communication and observational skills, increase awareness of point of view, and deepen appreciation of the narrative content of illness.

METHODS

Narrative medicine and visual thinking exercises, adopted from the study of literature and art history, were offered as monthly sessions in the neurology residents' conference schedule. Participants completed an institutional review board-approved anonymous evaluation using a 5-point Likert scale to rate course effectiveness and perform a retrospective pre- and post-self-assessment of communication and visual observation skills. They also provided free text feedback on the course.

RESULTS

All participants rated the course highly and found the exercises effective in enhancing awareness of language and observational skills. Eighty percent of participants rated their listening and observation skills as above average after participation, which improved from 63% and 45%, respectively, before the sessions. Comments on the course cited the importance of reflection, focused attention, awareness of multiple perspectives, and appreciation of colleagues.

CONCLUSIONS

Arts-based graduate medical education is feasible and effective in teaching residents to listen and observe more closely. Narrative medicine and visual thinking exercises highlight these skills and promote professional growth, providing an opportunity to reflect and find meaning in clinical work.