Abstract
Radial artery diameter may limit whether a guiding sheath (GS) can be used via transradial artery access (TRA). A smaller GS may reduce the risk of access site-related complications. This study investigated the feasibility and safety of endovascular treatment (EVT) using a straight-shaped 3-Fr GS (Axcelguide; Medikit). Patients who underwent EVT with a straight-shaped 3-Fr GS at 3 institutions between April 2022 and March 2024 were retrospectively reviewed. Patient background, anatomic and procedural factors, and complications were recorded. Twenty-six pathologies were treated with EVT using a 3-Fr GS. Median radial artery diameter was 1.9 mm, and distal TRA (73.1%) was selected more often than TRA (26.9%) as the access site. The breakdown of target pathologies and the role of the 3-Fr GS were as follows: 12 unruptured cerebral aneurysms for intra-aneurysmal coiling, with 5 dural arteriovenous fistulas, 5 brain or head and neck tumors, 2 chronic subdural hematoma, 1 arteriovenous malformation, and 1 hereditary hemorrhagic telangiectasia for transarterial embolization. A success rate of 96.2% was achieved, with no access site- or non-access site-related complications observed within 30 days. The straight-shaped 3-Fr GS may be applicable for selected pathologies, allowing access even with RAs <2 mm in diameter and facilitating EVT without complications. Preliminary experience with the 3-Fr GS via TRA demonstrated excellent feasibility and safety.
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