Evidence map›Paper›PMID 32389946›Full record

ArticleInternal medicine (Tokyo, Japan)2020

Peroral Cholangioscopy-guided Electrohydraulic Lithotripsy with a SpyGlass DS Versus a Conventional Digital Cholangioscope for Difficult Bile Duct Stones.

Toji Murabayashi, Takahisa Ogawa, Shinsuke Koshita, Yoshihide Kanno, Hiroaki Kusunose, Toshitaka Sakai, Kaori Masu, Keisuke Yonamine, Kazuaki Miyamoto, Fumisato Kozakai and 3 more

Abstract read
In one paragraph

Article in Internal medicine (Tokyo, Japan), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Clinical Practice Guidelines for Peroral Cholangioscopy.Journal of hepato-biliary-pancreatic sciences · 2026
    Guideline
  2. Article
  3. Article
  4. Article
  5. Pancreatoscopy in the evaluation and management of pancreatic disorders.World journal of gastrointestinal endoscopy · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Peroral cholangioscopy: Update on the state-of-the-art.World journal of gastrointestinal endoscopy · 2022
    Article
  12. Choledochoscopy: An update.World journal of gastrointestinal endoscopy · 2021
    Review
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Toji MurabayashiDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Takahisa OgawaDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Shinsuke KoshitaDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Yoshihide KannoDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Hiroaki KusunoseDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Toshitaka SakaiDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Kaori MasuDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Keisuke YonamineDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Kazuaki MiyamotoDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Fumisato KozakaiDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Kazuki EndoDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Yutaka NodaDepartment of Gastroenterology, Sendai City Medical Center, Japan.
Kei ItoDepartment of Gastroenterology, Sendai City Medical Center, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective Recently, a new digital peroral cholangioscopy (POCS) system, the SpyGlass DS (SpyDS), has been used for POCS-guided lithotripsy for difficult bile duct stones (DBDSs). The aim of this retrospective study was to compare the efficacy of SpyDS-guided electrohydraulic lithotripsy (EHL) for DBDS with that of a conventional digital cholangioscope. Methods Seventeen consecutive patients who had undergone POCS-guided EHL for DBDS with the SpyDS between October 2015 and January 2019 were enrolled in this study group (SpyDS group) using a prospectively maintained database. Fifteen other consecutive patients who had undergone POCS-guided EHL with a conventional digital cholangioscope (CHF-B260) just prior to the introduction of the SpyDS between December 2006 and September 2015 were analyzed as a control group (CHF group). The main outcome measurement was the total procedure time to complete stone removal. Results The rate of complete stone removal was 100% for both groups. The mean total procedure time for the SpyDS group was significantly shorter than that for the CHF group (67±30 minutes vs. 107±64 minutes, p=0.038). The mean number of endoscopic sessions for the SpyDS group was significantly lower than that for the CHF group (1.35±0.49 vs. 2.00±0.85, p=0.037). There were no significant differences in the rate of adverse events between the two groups. Conclusion The SpyDS appears useful for decreasing the procedure time and number of endoscopic sessions for complete stone removal in POCS-guided EHL for DBDS compared with a conventional digital cholangioscope.

Indexed as

AgedAged, 80 and overCholangiopancreatography, Endoscopic RetrogradeFemaleGallstonesHumansLithotripsyMaleMiddle AgedOperative TimeRetrospective StudiesTreatment Outcomecholangiopancreatoscopydifficult stoneendoscopic retrograde cholangiopancreatographysingle-operator

Identifiers

PMID32389946
PMCPMC7492117

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.