Swedish nationwide study of 377 patents with non-aneurysmal subarachnoid haemorrhage: a disease with distinct demographics and risk factors
This is the largest epidemiological study of NASAH to date. The observed incidence of NASAH was higher than in the previous reports, suggesting either underdiagnosis in earlier studies or a changing proportion of aSAH to NASAH cases. The distinct differences in population characteristics and risk factors suggest that NASAH and aSAH arise from fundamentally different pathophysiological mechanisms. DM emerged as a risk factor for NASAH, and MAPAs were identified as one of the underlying sources of haemorrhage in this subgroup.
Authors
- Erik Kronvall (ORCID: https://orcid.org/0000-0003-2329-1608)
- Steen Friðriksson
- Ola Nilsson (ORCID: https://orcid.org/0000-0002-1626-8410)
- Mikael Svensson (ORCID: https://orcid.org/0000-0003-1179-7003)
- Elisabeth Ronne-Engström (ORCID: https://orcid.org/0000-0001-6345-9415)
- Bryndís Baldvinsdóttir (ORCID: https://orcid.org/0000-0003-0124-5619)
- Peter Alpkvist
- Paula Klurfan (ORCID: https://orcid.org/0000-0002-6481-2329)
- Peter Lindvall (ORCID: https://orcid.org/0000-0002-9552-2957)
- Per Enblad (ORCID: https://orcid.org/0000-0003-4364-1919)
- Helena Aineskog (ORCID: https://orcid.org/0000-0003-3354-4146)
- Asgeir Store Jakola (ORCID: https://orcid.org/0000-0002-2860-9331)
- Johanna Eneling
- Jan Hillman
Institutions
- Linköping University (SE)
- Uppsala University (SE)
- Karolinska University Hospital (SE)
- Lund University (SE)
- Sahlgrenska University Hospital (SE)
- University of Gothenburg (SE)
- Umeå University (SE)
Publication Details
- Journal
- Journal of Neurology Neurosurgery & Psychiatry
- Published
- 2025-11-20
- DOI
- https://doi.org/10.1136/jnnp-2025-336970
- Primary Topic
- Intracranial Aneurysms: Treatment and Complications
- Type
- article
- Field-Weighted Citation Impact
- 0.00