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Detecting stent geometry changes after venous recanalization using duplex ultrasound.
Mohammad E Barbati1, Alexander Gombert1, Irwin Toonder2
11 Department of Vascular Surgery, University Hospital Aachen, Aachen, Germany.
Phlebology
|February 8, 2018
Summary
Duplex ultrasound effectively monitors changes in endovenous stents for post-thrombotic syndrome. Reduced stent area over time predicts stent patency, guiding treatment for chronic venous obstruction.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Medical Imaging
Background:
- Post-thrombotic syndrome (PTS) from chronic venous obstruction often requires endovenous revascularization.
- Conservative management may be insufficient for some PTS patients.
- Endovenous stenting offers a revascularization option for refractory PTS.
Purpose of the Study:
- To evaluate the utility of duplex ultrasound in monitoring endovenous stent changes over time.
- To assess the correlation between stent area reduction and stent patency.
- To determine the accuracy of duplex ultrasound in detecting stent changes and patency.
Main Methods:
- Retrospective review of duplex ultrasound images from patients who underwent endovenous stenting.
- Analysis of stent diameter and area during follow-up visits.
- Statistical analysis to identify predictors of stent patency.
Main Results:
- 210 stents were implanted in 137 limbs.
- A mean decrease in stent area (0.69 cm²) was observed in all patients.
- Reduced stent area over time was a significant predictor of stent patency (OR: 0.910).
Conclusions:
- Duplex ultrasound is accurate for detecting changes in endovenous stent lumen and assessing patency.
- A discrepancy exists between in vitro stent diameter and post-deployment measurements.
- Stent occlusion is primarily linked to lumen area reduction, not percentage of stenosis.
Keywords:
Venous recanalizationpost-thrombotic syndromestent geometrystent patencyultrasound-color DopplerMore Related Videos
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