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Duplex assessment of run-off before femorocrural reconstruction
Y G Wilson1, J K George, D C Wilkins
1Vascular Surgical Unit, Derriford Hospital, Plymouth, UK.
Insights
Color duplex imaging accurately assesses distal run-off for femorocrural reconstruction. This vascular imaging technique proved superior to arteriography in a prospective study evaluating bypass graft suitability.
Area of Science:
- Vascular Surgery
- Medical Imaging
- Diagnostic Techniques
Background:
- Femorocrural reconstruction is crucial for treating critical limb ischemia.
- Accurate assessment of distal run-off is vital for successful bypass grafting.
- Traditional imaging methods have limitations in evaluating distal arterial vessels.
Purpose of the Study:
- To prospectively evaluate color duplex imaging for assessing distal run-off before femorocrural reconstruction.
- To compare the efficacy of duplex imaging with dependent Doppler and arteriography.
- To determine the optimal imaging modality for preoperative planning of femorocrural bypass.
Main Methods:
- Prospective evaluation of 44 femorocrural reconstructions in 43 patients with critical ischemia.
- Preoperative run-off assessments using dependent Doppler, arteriography, and duplex imaging by blinded specialists.
- Comparison of preoperative data with intraoperative findings and completion studies.
Main Results:
- Color duplex imaging correctly predicted suitable run-off vessels for all 44 grafts.
- Arteriography correctly predicted suitable run-off in 32 cases but was indeterminate or failed in 9.
- Dependent Doppler had limited accuracy, correctly predicting suitable run-off in only 21 limbs.
Conclusions:
- Color duplex imaging is superior to arteriography for preoperative assessment of distal run-off.
- Duplex imaging offers a reliable and accurate method for planning femorocrural bypass surgery.
- Enhanced preoperative imaging improves outcomes in patients undergoing femorocrural reconstruction.
Background:
This study was a prospective evaluation of colour duplex imaging for the assessment of distal run-off before femorocrural reconstruction.
Methods:
Patients with critical ischaemia who required a distal bypass underwent preoperative run-off assessments using dependent Doppler, arteriography and duplex imaging by a vascular surgeon, radiologist and technologist respectively; each was blinded to the findings of the others. Preoperative data were compared with intraoperative clinical findings and completion flow studies/ arteriograms.
Results:
Forty-three consecutive patients (33 men, ten women; mean age 78 (range 53-95) years; 12 diabetic) undergoing 44 femorocrural reconstructions for critical ischaemia were assessed. The 30-day primary cumulative graft patency for the series was 86 per cent. Dependent Doppler correctly predicted a suitable run-off vessel in 21 limbs but was indeterminate in four and unrecordable in 19. Arteriography correctly predicted a suitable run-off vessel in 32 cases, but was indeterminate in six and failed to demonstrate run-off in three patients. Arteriography suggested an inferior vessel in three cases. Duplex correctly predicted a suitable run-off vessel for all 44 grafts.
Conclusion:
Duplex imaging is superior to arteriography for preoperative assessment of distal run-off for femorocrural reconstruction.