During endoscopic ultrasound-guided biliary drainage (EUS-BD), a combination of a 19-gauge needle and a 0.025-inch guidewire is generally used. However, a 19-gauge needle has poor maneuverability because of their stiffness and rigidity and might have poor penetrability in non-dilated bile ducts because of their large bore. In contrast, the application of a 22-gauge needle is expected to have improved maneuverability. However, only a 0.018-inch guidewire, which has less supportability, is applicable in the subsequent guidewire selection. This study aimed to evaluate the feasibility and safety of a dedicated bougie dilator for a 0.018-inch guidewire.

中文翻译：

---

在 EUS 引导的胆道引流中使用专用探条扩张器用于 0.018 英寸导丝：一项多中心回顾性队列研究

在超声内镜引导下胆道引流 (EUS-BD) 期间，通常使用 19 号针和 0.025 英寸导丝的组合。然而，19 号针头由于其刚度和刚性而具有较差的可操作性，并且由于其较大的孔径，在未扩张的胆管中可能具有较差的穿透性。相比之下，22 号针头的应用有望提高可操作性。但在后续的导丝选型中，只有0.018英寸的导丝，支撑性较差。本研究旨在评估用于 0.018 英寸导丝的专用探条扩张器的可行性和安全性。