Hepatic artery stenting with Viabahn
Author Information
Author(s): Okumura Kenichiro, Ogi Takahiro, Matsumoto Junichi, Asato Nobuyuki, Sun Xiamin, Osanai Hirohito, Kozaka Kazuto, Kobayashi Satoshi
Primary Institution: Department of Radiology, Kanazawa University Graduate School of Medical Sciences
Hypothesis
Certain aspects of hepatic artery morphology might critically affect the outcomes of stent placement.
Conclusion
Vessel tortuosity can complicate stent insertion, and severe narrowing distal to the bleeding point increases the risk of short-term occlusion.
Supporting Evidence
- Final technical and clinical success was achieved in all cases (100%).
- One-month stent patency was observed in 10/12 cases (83%).
- Severe narrowing distal to the bleeding point significantly increased the risk of stent occlusion (67% occlusion rate).
Takeaway
This study looked at how the shape of blood vessels affects the success of a special type of stent used to treat bleeding after surgery. They found that twisted vessels can make it harder to place the stent correctly.
Methodology
This retrospective study examined 12 consecutive cases of hepatic artery stenting in 11 patients using Viabahn grafts for postoperative arterial injuries.
Potential Biases
Inter-observer variability in qualitative evaluations of stenosis and vessel morphology.
Limitations
The study is a retrospective, single-institution analysis with a small sample size, which may limit the ability to detect statistically significant associations.
Participant Demographics
11 patients (8 men, 3 women; median age 64.5 years, range 48–80).
Statistical Information
P-Value
p=0.005 for the relationship between accordion-like appearances and technical success.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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