Evidence map›Paper›PMID 39903570›Full record

ArticleInternational journal of surgery (London, England)2025

Evaluating the learning curve for flexible ureteroscopic thulium fiber laser lithotripsy using CUSUM analysis.

Zhilong Li, Shaojie Wu, Xiaoyu Tang, Yongwen Luo, Du Wang, Tongzu Liu, Sheng Li, Xinghuan Wang

Abstract read
In one paragraph

Article in International journal of surgery (London, England), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

3 citing papers in PubMed.

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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

8 authors.

Zhilong LiDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Shaojie WuDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Xiaoyu TangDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Yongwen LuoDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Du WangThe Institute of Technological Sciences, Wuhan University, Wuhan, China.
Tongzu LiuDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Sheng LiDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
Xinghuan WangDepartment of Urology, Cancer Precision Diagnosis and Treatment and Translational Medicine Hubei Engineering Research Center, Zhongnan Hospital of Wuhan University, Wuhan, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesEffective training methods and learning curve (LC) assessment are crucial for more difficult endoscopic procedures. The present study sought to assess the LC of flexible ureteroscopes (fURS) for thulium fiber laser (TFL) lithotripsy and determine the effectiveness of using a porcine kidney model in training modality, to inform future training.

methodsPostgraduate medical students without experience in ureteroscopy were recruited, and surgical data were collected from 10 consecutive flexible ureteroscopic lithotripsy (fURL) procedures performed on our homemade porcine kidney training model. Cumulative sum (CUSUM) analysis and pooled mean CUSUM curves were applied to determine the LC turning points (TPs), and pre-LC and post-LC data were compared with that of an experienced attending physician.

resultsData from 110 surgeries were included in the analysis. The mean number of surgical units to overcome the LC for the duration of fURS TFL lithotripsy was 4. The operation time, number of tissue damage, and number of central visual shifts were significantly lower in students after the TP than before. No statistically significant difference in operation time was found between the students after the LC (817.50 [703.75-964.75]) and the surgeon group (732.50 [51.00-822.25]).

conclusionOvercoming the LC of fURS TFL lithotripsy requires four surgeries, and the developed ex vivo porcine kidney is a conveniently accessible and effective clinical training model.

Indexed as

Learning CurveLithotripsy, LaserUreteroscopesUreteroscopyAnimalsClinical CompetenceHumansSwineThuliumThulium

Identifiers

PMID39903570
PMCPMC12372719

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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.