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Intraoperative prebypass arteriography for infrageniculate revascularization
T S Huber1, M R Back, T C Flynn
1Section of Vascular Surgery, University of Florida College of Medicine, Gainesville Veterans Administration Medical Center, 32610-0286, USA.
American Journal of Surgery
|August 1, 1997
Summary
Intraoperative arteriography (IOA) improves distal bypass target selection for infrageniculate revascularization, enhancing limb salvage in complex cases. This technique offers better visualization than preoperative arteriography, aiding surgical decisions.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Cardiovascular Medicine
Background:
- Selecting optimal distal targets for infrageniculate arterial revascularization is challenging due to poor preoperative arteriography visualization of distal vasculature in multilevel occlusive disease.
- Prebypass intraoperative arteriography (IOA) can enhance distal arterial visualization and bypass target selection.
Purpose of the Study:
- To prospectively evaluate the impact of intraoperative arteriography (IOA) on distal bypass target selection and outcomes in patients undergoing infrageniculate arterial revascularization.
- To compare the diagnostic accuracy of IOA with preoperative contrast arteriography (CA) in visualizing distal arterial segments.
Main Methods:
- A prospective study of 114 extremities in 104 patients requiring infrageniculate bypass.
- Comparison of preoperative contrast arteriography (CA) plans with operative procedures guided by intraoperative arteriography (IOA).
- Independent postoperative review of CA and IOA by blinded vascular surgeons to assess visualized patent and stenotic vessel segments.
Main Results:
- IOA altered the operative plan in 24% of patients, leading to changes in anastomotic site selection or procedure type (bypass vs. amputation).
- IOA enabled bypass in 42% of patients initially deemed unreconstructable by preoperative CA.
- IOA required an average of 13 minutes, with adequate studies obtained on the first attempt in 86% of cases.
Conclusions:
- Prebypass intraoperative arteriography is a valuable tool for selecting optimal distal bypass targets in infrageniculate revascularization.
- IOA can improve initial limb salvage rates in select patients previously considered unreconstructable based on preoperative imaging.