Amplatzer Vascular Plugs Versus Coils for Embolization of Pulmonary Arteriovenous Malformations in Patients with Hereditary Hemorrhagic Telangiectasia

Journal Article · Mon Aug 15 04:00:00 EDT 2016 · Cardiovascular and Interventional Radiology

DOI:https://doi.org/10.1007/S00270-016-1357-7· OSTI ID:22645479

Tau, Noam; Atar, Eliyahu ^[1]; Mei-Zahav, Meir ^[2]; Bachar, Gil N. ^[1]; Dagan, Tamir; Birk, Einat; Bruckheimer, Elchanan ^[3]

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1. Rabin Medical Center – Beilinson and HaSharon Campuses, Department of Diagnostic Imaging (Israel)
2. Schneider Children’s Medical Center of Israel, Department of Pulmonology and National HHT Center (Israel)
3. Schneider Children’s Medical Center of Israel, Institute of Pediatric Cardiology (Israel)

PurposeCoil embolization of pulmonary arteriovenous malformations (PAVMs) has a high re-canalization/re-perfusion rate. Embolization with Amplatzer plugs has been previously described, but the long-term efficacy is not established. This study reports the experience of a referral medical center with the use of coils and Amplatzer plugs for treating PAVMs in patients with hereditary hemorrhagic telangiectasia.MethodsThe study was approved by the Institutional Review Board with waiver of informed consent. The cohort included all patients who underwent PAVM embolization in 2004–2014 for whom follow-up imaging scans were available. The medical files were retrospectively reviewed for background data, embolization method (coils, Amplatzer plugs, both), and complications. Re-canalization of treated PAVMs was assessed from intrapulmonary angiograms (following percutaneous procedures) or computed tomography angiograms. Fisher’s exact test and Pearson Chi-squared test or t test were used for statistical analysis, with significance at p < 0.05.Results16 patients met the study criteria. Imaging scans were available for 63 of the total 110 PAVMs treated in 41 procedures. Coils were used for embolization in 37 PAVMs, Amplatzer plugs in 21, and both in five. Median follow-up time was 7.7 years (range 1.4–18.9). Re-canalization was detected in seven vessels, all treated with coils; there were no cases of re-canalization in plug-occluded vessels (p = 0.0413).ConclusionThe use of Amplatzer plugs for the embolization of PAVMs in patients with hemorrhagic telangiectasia is associated with a significantly lower rate of re-canalization of feeding vessels than coils. Long-term prospective studies are required to confirm these findings.

• OSTI ID: 22645479
• Journal Information: Cardiovascular and Interventional Radiology, Journal Name: Cardiovascular and Interventional Radiology Journal Issue: 8 Vol. 39; ISSN 0174-1551; ISSN CAIRDG
• Country of Publication: United States
• Language: English

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