Pulmonary Arteriovenous Malformations: Safety and Efficacy of Microvascular Plugs

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Abstract
OBJECTIVE. The purpose of this study is to assess the safety and efficacy of microvascular plugs for the treatment of pulmonary arteriovenous malformations (PAVMs). MATERIALS AND METHODS. From July 2014 to March 2017, 22 consecutive patients with hereditary hemorrhagic telangiectasia underwent treatment of PAVMs using microvascular plugs. The number, location, and type (simple or complex) of PAVM and the diameter of the feeding artery were assessed at angiography. Safety was evaluated by successful detachment and absence of migration of the microvascular plug after deployment. Efficacy was assessed by technical success, defined as immediate stasis in the feeding artery above the microvascular plug at the time of angiography, and by the persistence rate at 1-year follow-up CT. RESULTS. Thirty-nine PAVMs (36 simple and three complex) were treated with 52 microvascular plugs in 22 consecutive patients. Thirty-three PAVMs were undergoing initial treatment and six were undergoing retreatment after previous emb...

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