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자료유형
학술저널
저자정보
저널정보
대한소화기내시경학회 Clinical Endoscopy Clinical Endoscopy 제53권 제1호
발행연도
2020.1
수록면
65 - 72 (8page)

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Background/Aims: Using an appropriate guidewire can increase the success rate of selective cannulation in endoscopic retrogradecholangiopancreatography. The purpose of this technical study was to investigate the characteristics of each guidewire type and toevaluate its effciency and rapidity of insertion. Methods: We conducted a three-point bending test using a universal testing machine to investigate the flexibility and bending featuresof each guidewire. 3D-printed silicone tubes with various types of stricture and a hand-made biliary tree silicone model with sixstrandedintrahepatic ducts were used to evaluate the success rate and insertion time of each guidewire. Results: In the three-point bending test, the characteristics of each guidewire were classified. We found that the bending strengthsand times were independent of shaft thickness. Using two in vitro biliary duct models, we determined that the success rate and totalinsertion time were better for guidewires with a resilient shaft and angled tip than for other types of guidewires (p<0.001). Althoughthickness of the guidewire affected the success rate (p<0.05), it did not affect the total insertion time (p≥0.05). Conclusions: Among several types of guidewire, some factors (resilient shaft, highly flexible, and angled tip) appeared to be associatedwith the effciency and rapidity of the guidewire insertion.

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