Welcome! Designated as a Regional Stroke Centre, Health Sciences North | Horizon Santé-Nord (HSN), formerly the Hôpital régional de Sudbury Regional Hospital (HRSRH), in Sudbury sees approximately 450 Stroke and TIA patients come through its doors each year. Please click on the tabs to the left that describe some of our services and team members in addition to some of the community stroke initiatives/services available to you.