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Updated: Jun 28, 2026
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Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms
Published on: August 11, 2015
Effects of temporary clipping during aneurysm surgery.
Chris Woertgen1, Ralf Dirk Rothoerl, Ruth Albert
1Department of Neurosurgery, University of Regensburg, Regensburg, Germany. chris.woertgen@klinik.uni-regensburg.de
Neurological Research
|October 28, 2008
Summary
Temporary vessel occlusion during aneurysm surgery may worsen cerebral vasospasm. Longer occlusion times correlated with increased vasospasm and unfavorable outcomes in patients with cerebral aneurysms.
Area of Science:
- Neurosurgery
- Neurology
- Vascular Surgery
Background:
- Intraoperative aneurysm rupture carries significant morbidity and mortality.
- Temporary vessel occlusion is standard during aneurysm clipping to prevent hemorrhage.
- Limited data exists on the impact of temporary occlusion on cerebral vasospasm.
Purpose of the Study:
- To investigate the association between temporary vessel occlusion and cerebral vasospasm post-aneurysm surgery.
- To provide further insights into the role of temporary occlusion in aneurysm treatment outcomes.
Main Methods:
- Retrospective review of 292 patients undergoing cerebral aneurysm surgery.
- Data collected from a prospectively maintained database.
- Analysis included subarachnoid hemorrhage severity, transcranial Doppler (TCD) data, and surgical details, including temporary occlusion duration.
Main Results:
- Temporary occlusion was used in 50% of patients.
- Temporary occlusion was associated with a higher incidence of postoperative vasospasm (34% vs. 20%, p < 0.006).
- Longer occlusion times correlated with increased vasospasm and ischemic lesions, particularly for middle cerebral artery aneurysms.
Conclusions:
- Temporary vessel occlusion may be an aggravating factor for vasospasm following aneurysmal subarachnoid hemorrhage.
- Findings suggest careful consideration of occlusion duration in aneurysm surgery.
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