Kosuke Takahashi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Kosuke Takahashi has a total of 161 co-authors. Here are the top co-authors by number of shared publications:
- Eisuke Ozawa
Department of Gastroenterology and Hepatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
13 shared publications Hisamitsu Miyaaki
12 shared publications- Ichiro Yasuda
Third Department of Internal Medicine, University of Toyama, Toyama, Japan
6 shared publications Kazuhiko Nakao
Department of Gastroenterology and Hepatology, Sasebo City General Hospital, Sasebo, Japan
6 shared publicationsEisuke Ozawa
5 shared publicationsMasanori Fukushima
4 shared publications
Latest Publications
- Open Access
- 1 October 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 05) , E1095-E1097
Percutaneous rendezvous delivery of an intraductal metal stent for a refractory biliary stricture after liver transplantation
- 1 October 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 05) , E1095-E1097
Open AccessPercutaneous rendezvous delivery of an intraductal metal stent for a refractory biliary stricture after liver transplantation
- Open Access
- 2 September 2026
- Published by The Editorial Office of Gut and Liver in Gut and Liver
Safety of Endoscopic Ultrasound-Guided Biliary Drainage in Patients with Distal Malignant Biliary Obstruction with Large-Volume Ascites
Takehiko Koga, Yusuke Ishida, Akihisa Ohno, Ryota Sagami, Yoshitaka Nakamura, Makoto Hinokuchi, Kosuke Takahashi, Hidefumi Nishikori, Nao Fujimori, Yasuhisa Hiroshima, Hiroki Taguchi, Shinichi Hashimoto, Eisuke Ozawa, Hiroaki Tsuji, Naoaki Tsuchiya, Takanori Kitaguchi, Keisuke Matsumoto, Makoto Fukuyama, Tatsuro Nii, Fumihito Hirai. Gut and Liver -0001;0:. https://doi.org/10.5009/gnl260042
- 2 September 2026
- Published by The Editorial Office of Gut and Liver in Gut and Liver
Open AccessSafety of Endoscopic Ultrasound-Guided Biliary Drainage in Patients with Distal Malignant Biliary Obstruction with Large-Volume Ascites
Takehiko Koga, Yusuke Ishida, Akihisa Ohno, Ryota Sagami, Yoshitaka Nakamura, Makoto Hinokuchi, Kosuke Takahashi, Hidefumi Nishikori, Nao Fujimori, Yasuhisa Hiroshima, Hiroki Taguchi, Shinichi Hashimoto, Eisuke Ozawa, Hiroaki Tsuji, Naoaki Tsuchiya, Takanori Kitaguchi, Keisuke Matsumoto, Makoto Fukuyama, Tatsuro Nii, Fumihito Hirai. Gut and Liver -0001;0:. https://doi.org/10.5009/gnl260042
- 29 July 2026
- Published by Georg Thieme Verlag KG in Endoscopy
The effect of spiral basket geometry on procedural efficiency and device escalation in small bile duct stones: a multicenter randomized controlled trial (ESCAPE trial)
The optimal first-line device for endoscopic retrograde cholangiopancreatography (ERCP) removal of small common bile duct stones (CBDS) remains uncertain. Whether basket geometry – independent of device category – influences procedural efficiency has not been evaluated in a randomized trial. We aimed to compare a spiral-configured 8-wire basket with a standard 8-wire basket for small CBDS. In this multicenter randomized controlled trial, patients with CBDS ≤8 mm were randomly assigned (1:1) to stone extraction using a standard or spiral-configured 8-wire basket. Among 200 randomized patients, 193 underwent basket insertion (spiral group 97, standard group 96). First-line procedural success without device escalation within 10 minutes was significantly higher in the spiral group (97.9% vs. 85.4%; 95%CI 4.9 to 20.1; P = 0.004), corresponding to a number-needed-to-treat of 8. The spiral basket required fewer sweeps (mean [SD]: 2.71 [1.41] vs. 3.31 [1.67]; P = 0.01) and shorter procedure time (3.96 [2.86] vs. 5.48 [4.38] minutes; P = 0.01). Adverse event rates were comparable between groups. Mean device-related costs were lower in the spiral group (mean difference –108 USD; bootstrap 95%CI –185 to –42). A spiral basket configuration improved early procedural efficiency and reduced device escalation and device-related costs, without improving the final stone clearance rate or increasing adverse events. The spiral basket was not compared with balloon extraction and should not be interpreted as superior to it. Although the device evaluated is currently available primarily in Japan, the geometric principle underlying its advantage may inform device development more broadly.
- 29 July 2026
- Published by Georg Thieme Verlag KG in Endoscopy
The effect of spiral basket geometry on procedural efficiency and device escalation in small bile duct stones: a multicenter randomized controlled trial (ESCAPE trial)
The optimal first-line device for endoscopic retrograde cholangiopancreatography (ERCP) removal of small common bile duct stones (CBDS) remains uncertain. Whether basket geometry – independent of device category – influences procedural efficiency has not been evaluated in a randomized trial. We aimed to compare a spiral-configured 8-wire basket with a standard 8-wire basket for small CBDS. In this multicenter randomized controlled trial, patients with CBDS ≤8 mm were randomly assigned (1:1) to stone extraction using a standard or spiral-configured 8-wire basket. Among 200 randomized patients, 193 underwent basket insertion (spiral group 97, standard group 96). First-line procedural success without device escalation within 10 minutes was significantly higher in the spiral group (97.9% vs. 85.4%; 95%CI 4.9 to 20.1; P = 0.004), corresponding to a number-needed-to-treat of 8. The spiral basket required fewer sweeps (mean [SD]: 2.71 [1.41] vs. 3.31 [1.67]; P = 0.01) and shorter procedure time (3.96 [2.86] vs. 5.48 [4.38] minutes; P = 0.01). Adverse event rates were comparable between groups. Mean device-related costs were lower in the spiral group (mean difference –108 USD; bootstrap 95%CI –185 to –42). A spiral basket configuration improved early procedural efficiency and reduced device escalation and device-related costs, without improving the final stone clearance rate or increasing adverse events. The spiral basket was not compared with balloon extraction and should not be interpreted as superior to it. Although the device evaluated is currently available primarily in Japan, the geometric principle underlying its advantage may inform device development more broadly.
- Open Access
- 3 July 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 04) , E984-E985
Direct fluoroscopic evidence of preserved side-branch drainage with a multi-hole covered metal stent for benign hepaticojejunostomy stricture after pancreaticoduodenectomy
- 3 July 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 04) , E984-E985
Open AccessDirect fluoroscopic evidence of preserved side-branch drainage with a multi-hole covered metal stent for benign hepaticojejunostomy stricture after pancreaticoduodenectomy
- Open Access
- 2 April 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 02) , E689-E691
Direct dilation-free stent delivery using a novel 0.035-inch guidewire in endoscopic ultrasound-guided biliary drainage: the new ‘Flush surface’ method
- 2 April 2026
- Published by Georg Thieme Verlag KG in Endoscopy
- Vol. 58 (S 02) , E689-E691
Open AccessDirect dilation-free stent delivery using a novel 0.035-inch guidewire in endoscopic ultrasound-guided biliary drainage: the new ‘Flush surface’ method
- Open Access
- 7 February 2026
- Published by Elsevier in Digestive and Liver Disease
- Vol. 58 (4) , 527-533
Sphincterotomy during endoscopic biliary drainage in cholangitis with sepsis-induced coagulopathy increases bleeding without clinical benefits
- 7 February 2026
- Published by Elsevier in Digestive and Liver Disease
- Vol. 58 (4) , 527-533
Open AccessSphincterotomy during endoscopic biliary drainage in cholangitis with sepsis-induced coagulopathy increases bleeding without clinical benefits
- Open Access
- 13 January 2026
- Published by Springer Nature in Trials
- Vol. 27 (1)
Effectiveness of maintaining oxygenation of a new high flow nasal cannula for endoscopic retrograde cholangiopancreatography during intravenous anesthesia
Intravenous anesthesia during endoscopic retrograde cholangiopancreatography (ERCP) is associated with a high incidence of respiratory depression. High-flo
- 13 January 2026
- Published by Springer Nature in Trials
- Vol. 27 (1)
Open AccessEffectiveness of maintaining oxygenation of a new high flow nasal cannula for endoscopic retrograde cholangiopancreatography during intravenous anesthesia
Intravenous anesthesia during endoscopic retrograde cholangiopancreatography (ERCP) is associated with a high incidence of respiratory depression. High-flo
- Open Access
- 1 January 2026
- Published by Wiley in International Journal of Hepatology
- Vol. 2026 (1) , 2748243
The Five‐Time Chair Stand Test Identifies Patients With Liver Cirrhosis at High Mortality Risk Overlooked by Conventional Sarcopenia Criteria
Background: Sarcopenia is a major complication of liver cirrhosis (LC), but current Japan Society of Hepatology (JSH) criteria are based on muscle mass and strength and do not incorporate physical performance. We investigated whether the five‐time chair stand test (5T‐CST) identifies high‐risk patients not detected by conventional sarcopenia assessment. Methods: We retrospectively analyzed 241 patients with LC who underwent the 5T‐CST. Low physical performance was defined as a 5T‐CST time ≥ 12 s. Patients were classified according to their handgrip strength and physical performance, with focus on those with normal handgrip strength. Results: Longer 5T‐CST duration was associated with lower handgrip strength and sarcopenia, but not low skeletal muscle mass index. Among 151 patients with normal handgrip strength and survival data, 27 (17.9%) had low physical performance. This subgroup had preserved muscle mass but more ascites and hepatic reserve impairment and lower survival (mortality, 29.6% vs. 12.1%; log‐rank p = 0.007). In a principal analysis restricted to this subgroup, adjusted for mALBI grade and hepatocellular carcinoma (HCC), low physical performance independently predicted mortality (hazard ratio, 4.70; 95% CI, 1.94–11.37; p < 0.001). In the overall cohort ( n = 237), it remained predictive after adjustment for age, sex, mALBI grade, HCC, and sarcopenia (hazard ratio, 2.74; 95% CI, 1.45–5.16; p = 0.002). Conclusions: Among patients with LC and normal handgrip strength, the 5T‐CST identified a subgroup at a high risk of mortality. Adding this simple test to sarcopenia assessment may help identify patients otherwise missed by handgrip strength alone.
- 1 January 2026
- Published by Wiley in International Journal of Hepatology
- Vol. 2026 (1) , 2748243
Open AccessThe Five‐Time Chair Stand Test Identifies Patients With Liver Cirrhosis at High Mortality Risk Overlooked by Conventional Sarcopenia Criteria
Background: Sarcopenia is a major complication of liver cirrhosis (LC), but current Japan Society of Hepatology (JSH) criteria are based on muscle mass and strength and do not incorporate physical performance. We investigated whether the five‐time chair stand test (5T‐CST) identifies high‐risk patients not detected by conventional sarcopenia assessment. Methods: We retrospectively analyzed 241 patients with LC who underwent the 5T‐CST. Low physical performance was defined as a 5T‐CST time ≥ 12 s. Patients were classified according to their handgrip strength and physical performance, with focus on those with normal handgrip strength. Results: Longer 5T‐CST duration was associated with lower handgrip strength and sarcopenia, but not low skeletal muscle mass index. Among 151 patients with normal handgrip strength and survival data, 27 (17.9%) had low physical performance. This subgroup had preserved muscle mass but more ascites and hepatic reserve impairment and lower survival (mortality, 29.6% vs. 12.1%; log‐rank p = 0.007). In a principal analysis restricted to this subgroup, adjusted for mALBI grade and hepatocellular carcinoma (HCC), low physical performance independently predicted mortality (hazard ratio, 4.70; 95% CI, 1.94–11.37; p < 0.001). In the overall cohort ( n = 237), it remained predictive after adjustment for age, sex, mALBI grade, HCC, and sarcopenia (hazard ratio, 2.74; 95% CI, 1.45–5.16; p = 0.002). Conclusions: Among patients with LC and normal handgrip strength, the 5T‐CST identified a subgroup at a high risk of mortality. Adding this simple test to sarcopenia assessment may help identify patients otherwise missed by handgrip strength alone.