Related Experiment Videos
Endovascular canine anastomotic stenting
M J Worsey1, A L Laborde, B V Miller
1Department of Surgery, University of Iowa College of Medicine, Iowa City 52242.
The Journal of Surgical Research
|January 1, 1993
Summary
This study investigated flexible metallic stent healing in canine arterial models. Stented arteries showed increased lumen area but also a significant intimal response.
Area of Science:
- Vascular surgery
- Biomedical engineering
- Histopathology
Background:
- Endovascular stents are used to maintain arterial patency.
- Understanding stent healing is crucial for improving outcomes.
- The Wallstent is a flexible metallic stent with multifilament design.
Purpose of the Study:
- To evaluate the healing characteristics and morphological features of a trans-anastomotic endovascular stent.
- To assess the impact of stent placement on arterial lumen and intimal response.
Main Methods:
- A canine end-to-end femoral artery model was used.
- Flexible metallic stents were placed in one femoral artery of 12 dogs.
- Histomorphometric analysis of anastomotic segments was performed at 3, 6, 9, and 12 weeks.
Main Results:
- Stented anastomoses demonstrated a significantly increased luminal area compared to non-stented controls (P < 0.002).
- A significant increase in intimal area was observed in stented segments versus controls (P < 0.001).
- The stent maintained a larger lumen despite notable intimal hyperplasia.
Conclusions:
- Flexible metallic stents can maintain arterial lumen post-anastomosis.
- Significant intimal response occurs around the stent, indicating a foreign body reaction.
- Further research may focus on mitigating intimal hyperplasia for improved long-term patency.