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Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
Flow replacement bypass for aneurysms: decision-making using intraoperative blood flow measurements
Sepideh Amin-Hanjani1, Ali Alaraj, Fady T Charbel
1Department of Neurosurgery, Neuropsychiatric Institute (MC 799), University of Illinois at Chicago, 912 South Wood Street, Chicago, IL 60612, USA. hanjani@uic.edu
Acta Neurochirurgica
|April 8, 2010
Summary
Intraoperative flow measurements guide extracranial-intracranial (EC-IC) bypass for complex aneurysms. This flow replacement strategy ensures adequate graft flow matches demand, confirming successful revascularization.
Area of Science:
- Neurosurgery
- Vascular Surgery
- Cerebrovascular Disease
Background:
- Extracranial-intracranial (EC-IC) bypass is debated for complex aneurysms.
- A novel flow replacement bypass strategy is introduced to address flow deficits.
Purpose of the Study:
- To introduce and evaluate a flow replacement bypass strategy for complex aneurysms.
- To utilize intraoperative flow measurements to guide revascularization and match graft flow to demand.
Main Methods:
- Reviewed 23 EC-IC bypass cases over 6 years.
- Utilized intraoperative ultrasonic flow probes to determine revascularization strategy.
- Analyzed the decision-making paradigm for flow replacement bypass.
Main Results:
- Flow measurements predicted required flow for terminal aneurysms (MCA, PICA, PCA, SCA).
- Measured flow deficit during temporary occlusion for internal carotid artery (ICA) aneurysms.
- Post-anastomosis flow measurements confirmed bypass patency and adequacy for all cases.
Conclusions:
- Intraoperative flow measurement guides graft selection in aneurysm surgery.
- This method confirms adequate bypass flow after parent vessel sacrifice.
- The flow replacement strategy ensures successful revascularization.
