Anchor Coil Technique for Arteriovenous Fistula Embolization

Abstract

<jats:p> We describe a case of arteriovenous fistula (AVF) successfully treated by coil embolization with an anchor coil inserted in the varix to facilitate dense packing at the shunting site. AVF of the left anterior choroidal artery (AChoA) draining into the ipsilateral basal vein of Rosenthal was incidentally found in a newborn female. A single detachable coil was inserted as an anchor into the varix adjacent to the shunt, and the microcatheter was pulled back to the shunting point. Three more detachable coils were delivered at the shunting point without migration under the support of the anchor coil, and the AVF was successfully obliterated with preservation of AChoA blood flow. The anchor coil technique can reduce the risk of coil migration and the number of coils required. </jats:p>

Exercise‐induced ventricular arrhythmia due to bilateral coronary to pulmonary artery fistulas

“…In larger CAFs, the anchor coil technique may be beneficial. Hereby, a large coil is released partially in an insignificant side branch and serves as an anchor for subsequent coils . However, there is no evidence to support superiority of any specific coiling approach.…”

“…Hereby, a large coil is released partially in an insignificant side branch and serves as an anchor for subsequent coils. 23 However, there is no evidence to support superiority of any specific coiling approach. Therefore, technique selection remains case-tailored and is mainly driven by fistula characteristics and operator expertise.…”

Coil and Onyx embolization of a torcular herophili dural arteriovenous fistula in a full-term neonate with advanced heart failure using a transumbilical approach

“…Coil embolization complications are observed typically less frequently than with liquid embolic agents because of the possibility of distal agent migration. 4,16,21 Coil embolization in combination with a liquid embolic agent with the goal of arterial flow obliteration has been utilized with results indicating relatively lower complication rates. 4 In addition, complete obliteration of the DAVF is not absolutely necessary to significantly reduce the degree of shunting.…”

“…4,16,21 Coil embolization in combination with a liquid embolic agent with the goal of arterial flow obliteration has been utilized with results indicating relatively lower complication rates. 4 In addition, complete obliteration of the DAVF is not absolutely necessary to significantly reduce the degree of shunting. 15 The combination of the two techniques is plausible and has been published in a few cases in the neonatal population, but unfortunately both with poor outcomes.…”

“…15 The combination of the two techniques is plausible and has been published in a few cases in the neonatal population, but unfortunately both with poor outcomes. 4,21 The low incidence of neonatal DAVFs coupled with poor outcomes despite current best therapy justifies reporting novel strategies for successful treatment. Therefore, we present a case of a full-term, normal birth weight neonate with a congenital DAVF of the torcular herophili that was successfully treated with transumbilical arterial coil and Onyx embolization due to refractory advanced heart failure.…”