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Usefulness of the double-guidewire technique for endoscopic procedures in the field of biliary and pancreatic diseases
Mamoru Takenaka, Masatoshi Kudo
Clin Endosc 2022;55(5):605-614.   Published online August 23, 2022
AbstractAbstract PDFPubReaderePub
The double-guidewire method has been increasingly used in endoscopic procedures for biliary and pancreatic diseases in recent years, including endoscopic retrograde cholangiopancreatography and endoscopic ultrasonography-related procedures. In addition, double-lumen catheters with uneven distal and proximal lumen openings have been introduced, making it possible to easily create a double-guidewire situation, and the usefulness of the double-guidewire technique using uneven double-lumen cannulas has been widely reported. Although the advantages of using two guidewires depend on the particular situation and the appropriate use of the two guidewires, deepening the knowledge of the double-guidewire method will contribute greatly to troubleshooting in daily practice. In this review, the usefulness of the double-guidewire technique is discussed with respect to two main areas: selective insertion of guidewires and devices and biliary cannulation.


Citations to this article as recorded by  
  • Advancements in Research on Challenges in Selective Biliary Cannulation during Endoscopic Retrograde Cholangiopancreatography (ERCP)
    天雨 张
    Journal of Clinical Personalized Medicine.2024; 03(01): 100.     CrossRef
  • Double-guidewire technique for selective biliary cannulation does not increase the rate of post-endoscopic retrograde cholangiopancreatography pancreatitis in patients with naïve papilla
    Han Taek Jeong, June Hwa Bae, Ho Gak Kim, Jimin Han
    Clinical Endoscopy.2024; 57(2): 226.     CrossRef
  • Dedicated Echoendoscope for Interventional Endoscopic Ultrasound: Comparison with a Conventional Echoendoscope
    Toshio Fujisawa, Shigeto Ishii, Yousuke Nakai, Hirofumi Kogure, Ko Tomishima, Yusuke Takasaki, Koichi Ito, Sho Takahashi, Akinori Suzuki, Hiroyuki Isayama
    Journal of Clinical Medicine.2024; 13(10): 2840.     CrossRef
    S. M. Vasyliuk, O. V. Prudnikov, V. V. Ivanyna, O. S. Tkachuk, N. M. Pavliuk, B. V. Krysa, V. M. Atamaniuk
    Kharkiv Surgical School.2022; (4-5): 55.     CrossRef
  • 2,799 View
  • 205 Download
  • 2 Web of Science
  • 4 Crossref
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Original Article
Bispectral index-guided propofol sedation during endoscopic ultrasonography
Ayana Okamoto, Ken Kamata, Takeshi Miyata, Tomoe Yoshikawa, Rei Ishikawa, Tomohiro Yamazaki, Atsushi Nakai, Shunsuke Omoto, Kosuke Minaga, Kentaro Yamao, Mamoru Takenaka, Yasutaka Chiba, Toshiharu Sakurai, Naoshi Nishida, Masayuki Kitano, Masatoshi Kudo
Clin Endosc 2022;55(4):558-563.   Published online July 12, 2022
AbstractAbstract PDFPubReaderePub
/Aims: Bispectral index (BIS) monitors process and display electroencephalographic data are used to assess the depth of anesthesia. This study retrospectively evaluated the usefulness of BIS monitoring during endoscopic ultrasonography (EUS).
This study included 725 consecutive patients who underwent EUS under sedation with propofol. BIS monitoring was used in 364 patients and was not used in 361. The following parameters were evaluated: (1) median dose of propofol; (2) respiratory and circulatory depression; (3) occurrence of body movements; (4) awakening score >8 at the time; and (5) awakening score 2 hours after leaving the endoscopy room.
The BIS group received a significantly lower median dose of propofol than the non-BIS group (159.2 mg vs. 167.5 mg; p=0.015) in all age groups. For patients aged ≥75 years, the reduction in heart rate was significantly lower in the BIS group than in the non-BIS group (1.2% vs. 9.1%; p=0.023). Moreover, the occurrence of body movements was markedly lower in the BIS group than in the non-BIS group (8.5% vs. 39.4%; p<0.001).
During EUS examination, BIS monitoring is useful for maintaining a constant depth of anesthesia, especially in patients 75 years of age or older.


Citations to this article as recorded by  
  • Advances in Analgosedation and Periprocedural Care for Gastrointestinal Endoscopy
    Sonja Skiljic, Dino Budrovac, Ana Cicvaric, Nenad Neskovic, Slavica Kvolik
    Life.2023; 13(2): 473.     CrossRef
  • Clinical and economic value of bispectral index monitoring for adequate endoscopic sedation
    Se Woo Park
    Clinical Endoscopy.2022; 55(4): 518.     CrossRef
  • Respiratory Failure during BIS-Guided Sedation in a Patient with Relapsing Polychondritis: A Case Report
    Jaesang Lee, Hosik Moon, Sungjin Hong, Jinyoung Chon, Hyejin Kwon, Hunwoo Park, Jiyung Lee
    Medicina.2022; 59(1): 65.     CrossRef
  • 3,340 View
  • 141 Download
  • 3 Web of Science
  • 3 Crossref
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Endoscopic Ultrasound Fine-Needle Biopsy May Contribute to the Diagnosis of Malignant Lymph Nodes
Mamoru Takenaka, Shunsuke Omoto, Masatoshi Kudo
Clin Endosc 2020;53(5):508-509.   Published online September 24, 2020


Citations to this article as recorded by  
  • The “echo-free space” technique: A safe and reliable method for endoscopic ultrasound scope insertion into the esophagus
    Shunsuke Omoto, Mamoru Takenaka, Kota Takashima, Yoriaki Komeda, Masatoshi Kudo
    Endoscopy.2024; 56(S 01): E500.     CrossRef
  • The “echo-free space” technique: a safe and reliable method for endoscopic ultrasound scope insertion
    Shunsuke Omoto, Mamoru Takenaka, Tomohiro Fukunaga, Kota Takashima, Yoriaki Komeda, Seok Jeong, Masatoshi Kudo
    Endoscopy.2023; 55(S 01): E698.     CrossRef
  • 3,023 View
  • 57 Download
  • 1 Web of Science
  • 2 Crossref
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Can Localized Stenosis of the Main Pancreatic Duct be a Predictive Factor for Early Detection of Pancreatic Cancer?
Mamoru Takenaka, Kentaro Yamao, Masatoshi Kudo
Clin Endosc 2019;52(6):523-524.   Published online November 29, 2019
  • 3,221 View
  • 61 Download
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