Common Bile Duct Dilatation With Stones Indicates Requirement for Early Drainage in Patients With or Without Cholangitis

Yasunobu Yamashita, Kazuki Ueda, Hiroko Abe, Takashi Tamura, Masahiro Itonaga, Takeichi Yoshida, Hiroki Maeda, Takao Maekita, Mikitaka Iguchi, Hideyuki Tamai, Masao Ichinose, Jun Kato

Abstract


Background: Some patients with common bile duct (CBD) stones develop cholangitis requiring drainage, while others do not. The aims of this study were to elucidate the clinical differences among patients with CBD stones who required and did not require emergent drainage, and to identify risk factors for the development of cholangitis requiring emergent drainage in patients with silent CBD stones.

Methods: Clinical characteristics of consecutive patients with CBD stones who underwent endoscopic removal of stones or biliary drainage were analyzed retrospectively.

Results: Of 101 patients analyzed, 32 had moderate or severe cholangitis as the indication for emergent drainage, and the remaining 69 did not. Patients who required emergent drainage were more likely to have gallstones (P = 0.029), dilated CBD (> 10 mm) (P = 0.004) and larger CBD stones (P = 0.019). By multivariate analysis, CBD dilation was the only significant differentiating clinical characteristic of the patients who required emergent drainage (OR = 3.75, 95% CI: 1.41-9.96, P = 0.008). Of the 35 patients with silent bile duct stones, eight required emergent endoscopic drainage during the waiting period. CBD dilation was also the only significant risk factor for the development of moderate or severe cholangitis among patients with silent bile duct stones (OR = 10.18, 95% CI: 1.09-94.73, P = 0.042).

Conclusions: Dilated CBD (> 10 mm) was the only risk factor identified for requirement of early drainage in patients with CBD stones. Those who have silent CBD stones with CBD dilatation should undergo early drainage.




Gastroenterology Research. 2013;6(6):219-226
doi: http://dx.doi.org/10.4021/gr587w


Keywords


Common bile duct stones; Acute cholangitis; Biliary drainage

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