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Use of Polyurethane-Covered Stents for Exclusion of Pulmonary Arteriovenous Malformations

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  • Arterial Interventions
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Abstract

Purpose

To evaluate the safety, technical success and short-term effectiveness of polyurethane-covered stent (PK Papyrus, BioTronik, Berlin) in the treatment of pulmonary arteriovenous malformations (PAVMs) that are not amenable to embolotherapy.

Materials and Methods

In this IRB-approved, retrospective study, data from patients who received polyurethane-covered stents for exclusion of PAVMs were analyzed. The study included 5 patients (all women) with a median age of 40 years (range 25–60). Patients presented with hypoxemia, TIAs, and/or epistaxis; 4 were confirmed to have HHT. All had multiple PAVMs diagnosed on chest CT and underwent embolization with other devices in addition to the polyurethane-covered stent. The indication for stent placement in all cases was a short and/or tortuous feeding artery. Safety was assessed by immediate or short-term complications, e.g., migration, stent thrombosis, and fracture. Technical success was defined as the ability to accurately place the stent at the intended location. Effectiveness was defined as successful exclusion of PAVM with no perfusion across the AVM.

Results

Technical success of stent placement was 100%. AVM exclusion rate was 80% after single stent deployment; in the case of incomplete exclusion, success was achieved using an overlapping stent to completely cover a second feeding artery. During the median follow-up period of 5 months (range 2–10), all stents remained patent, and AVMs were excluded without other complications.

Conclusion

Exclusion of PAVMs with polyurethane-covered stents is technically feasible, safe, and shows short-term effectiveness for PAVMs with a short/tortuous feeding artery when traditional embolization techniques are not possible.

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Authors and Affiliations

  1. Interventional Radiology Division, Radiology Department, Massachusetts General Hospital, Boston, MA, USA

    Ryan C. Adams, Patrick Sutphin, Shams Iqbal, Zubin Irani & Sanjeeva P. Kalva

  2. Abdominal Radiology Division, Radiology Department, Massachusetts General Hospital, Boston, MA, USA

    Siddhi Hegde

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  1. Ryan C. Adams
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  2. Siddhi Hegde
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  3. Patrick Sutphin
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  4. Shams Iqbal
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  6. Sanjeeva P. Kalva
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Correspondence to Ryan C. Adams.

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Adams, R.C., Hegde, S., Sutphin, P. et al. Use of Polyurethane-Covered Stents for Exclusion of Pulmonary Arteriovenous Malformations. Cardiovasc Intervent Radiol 47, 360–365 (2024). https://doi.org/10.1007/s00270-023-03638-0

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  • DOI: https://doi.org/10.1007/s00270-023-03638-0

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