ArticleJournal of neurointerventional surgery2026
Volume-outcome trends in ruptured intracranial aneurysm treatment: German healthcare data from 2013 to 2022.
Article in Journal of neurointerventional surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Impact of Provider Volume on Intraprocedural Rupture Risk During Endovascular Treatment of Ruptured Intracranial Aneurysms: A Systematic Review and Meta-Analysis.Life (Basel, Switzerland) · 2026Review
- Comment on ESO/EANS/ESMINT Guideline on Aneurysmal Subarachnoid Haemorrhage.Clinical neuroradiology · 2026Article
- An Anatomy-Guided, Stepwise Microsurgical Reconstruction of a Posteriorly Projecting ICA-PCoA Aneurysm Beneath the Optic Apparatus: A Detailed Operative Sequence.Diagnostics (Basel, Switzerland) · 2026Article
- Interdisciplinary neurovascular networks in Germany: update 2025.Neurological research and practice · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSubarachnoid hemorrhage (SAH) is a life-threatening condition with a high risk of disability requiring specialized care. This study investigated the relationship between hospital annual case volume and outcomes for patients undergoing clipping and endovascular treatment (EVT) of ruptured intracranial aneurysms (IAs) in Germany.
methodsGerman Federal Statistical Office data (2013-2022) derived from all German hospitals were analyzed for ruptured IA cases treated with EVT or clipping. Primary outcomes were in-hospital mortality and poor neurological outcome according to the National Inpatient Sample-SAH Outcome Measure. Poisson regression was used to assess the annual case volume-outcome relationship.
resultsIn 35 187 treatment cases for ruptured IA, a significant inverse relationship was found between annual case volume and both mortality and poor neurological outcomes for both treatment modalities. Each additional case performed annually decreased adverse outcome risk by 1%. EVT showed lower rates of poor neurological outcome (39.8% vs 49.8%, P<0.001), shorter hospital stays, less intensive care, and lower costs, but similar in-hospital mortality rates (18.5% vs 19.1%, P=0.127) compared with clipping. The in-hospital mortality rate for clipping increased in 2016-2018, 2021, and 2022 compared with the 2013 baseline, whereas it remained stable for EVT. Age was a significant predictor of mortality and poor neurological outcome.
conclusionsThis study is the first to quantify the volume-outcome relationship for treatment of ruptured IAs in Germany. Consistent results across treatment modalities suggest benefits of increased experience of neurovascular treatment centers. These findings enhance our understanding of factors influencing neurovascular care outcomes in Germany.
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