Antti Lindgren1,2, Ellie Bragan Turner3, Tomas Sillekens1, Atte Meretoja4,5, Jin-Moo Lee6, Thomas M Hemmen7, Timo Koivisto2, Mark Alberts8, Robin Lemmens9,10,11, Juha E Jääskeläinen2, Mervyn D I Vergouwen1, Gabriel J E Rinkel1. 1. Department of Neurology and Neurosurgery, University Medical Centre Utrecht, Utrecht, The Netherlands. 2. Department of Neurosurgery, NeuroCenter, Kuopio University Hospital, Kuopio, Finland. 3. Dr Foster Ltd and Global Comparators. 4. Department of Neurology, Helsinki University Hospital, Helsinki, Finland. 5. Department of Medicine at the Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia. 6. Department of Neurology, and the Hope Center for Neurological disorders, Washington University School of Medicine, St. Louis, Missouri. 7. Department of Neurosciences, University of California, San Diego, California. 8. Department of Neurology, Hartford Hospital, Hartford, Connecticut. 9. KU Leuven - University of Leuven, Department of Neurosciences, Experimental Neurology, Leuven Institute for Neuroscience and Disease (LIND), Leuven, Belgium. 10. VIB, Center for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium. 11. University Hospitals Leuven, Department of Neurology, Leuven, Belgium.
Abstract
BACKGROUND: Within randomized clinical trials (RCTs), coiling of the ruptured aneurysm to prevent rebleeding results in better outcomes than clipping in patients with aneurysmal subarachnoid hemorrhage (aSAH). OBJECTIVE: To study the association of coiling and clipping with outcome after aSAH in daily clinical practice. METHODS: In this controlled, nonrandomized study, we compared outcomes after endovascular coiling and neurosurgical clipping of ruptured intracranial aneurysms in an administrative dataset of 7658 aSAH patients (22 tertiary care hospitals from Europe, USA, Australia; 2007-2013). Because the results contradicted those of the randomized trials, findings were further explored in a large clinical dataset from 2 European centers (2006-2016) of 1501 patients. RESULTS: In the administrative dataset, the crude 14-d case-fatality rate was 6.4% (95% confidence interval [CI] 5.6%-7.2%) after clipping and 8.2% (95% CI 7.4%-9.1%) after coiling. After adjustment for age, sex, and comorbidity/severity, the odds ratio (OR) for 14-d case-fatality after coiling compared to clipping was 1.32 (95% CI 1.10-1.58). In the clinical dataset crude 14-d case fatality rate was 5.7% (95% CI 4.2%-7.8%) for clipping and 9.0% (95% CI 7.3%-11.2%) for coiling. In multivariable logistic regression analysis, the OR for 14-d case-fatality after coiling compared to clipping was 1.7 (95% CI 1.1-2.7), for 90-d case-fatality 1.28 (95% CI 0.91-1.82) and for 90-d poor functional outcome 0.78 (95% CI 0.6-1.01). CONCLUSION: In clinical practice, coiling after aSAH is associated with higher 14-d case-fatality than clipping and nonsuperior outcomes at 90 d. Both options need to be considered in aSAH patients. Further studies should address the reasons for the discrepancy between current data and those from the RCTs.
BACKGROUND: Within randomized clinical trials (RCTs), coiling of the ruptured aneurysm to prevent rebleeding results in better outcomes than clipping in patients with aneurysmal subarachnoid hemorrhage (aSAH). OBJECTIVE: To study the association of coiling and clipping with outcome after aSAH in daily clinical practice. METHODS: In this controlled, nonrandomized study, we compared outcomes after endovascular coiling and neurosurgical clipping of ruptured intracranial aneurysms in an administrative dataset of 7658 aSAH patients (22 tertiary care hospitals from Europe, USA, Australia; 2007-2013). Because the results contradicted those of the randomized trials, findings were further explored in a large clinical dataset from 2 European centers (2006-2016) of 1501 patients. RESULTS: In the administrative dataset, the crude 14-d case-fatality rate was 6.4% (95% confidence interval [CI] 5.6%-7.2%) after clipping and 8.2% (95% CI 7.4%-9.1%) after coiling. After adjustment for age, sex, and comorbidity/severity, the odds ratio (OR) for 14-d case-fatality after coiling compared to clipping was 1.32 (95% CI 1.10-1.58). In the clinical dataset crude 14-d case fatality rate was 5.7% (95% CI 4.2%-7.8%) for clipping and 9.0% (95% CI 7.3%-11.2%) for coiling. In multivariable logistic regression analysis, the OR for 14-d case-fatality after coiling compared to clipping was 1.7 (95% CI 1.1-2.7), for 90-d case-fatality 1.28 (95% CI 0.91-1.82) and for 90-d poor functional outcome 0.78 (95% CI 0.6-1.01). CONCLUSION: In clinical practice, coiling after aSAH is associated with higher 14-d case-fatality than clipping and nonsuperior outcomes at 90 d. Both options need to be considered in aSAH patients. Further studies should address the reasons for the discrepancy between current data and those from the RCTs.
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