Evidence map›Paper›PMID 41047468›Full record

ArticleWorld journal of surgery2025

A Disease-Specific Simulator of the Laparoscopic Percutaneous Extraperitoneal Closure (LPEC) Method for Pediatric Inguinal Hernia: A Validation Study With Comparison of Experienced Pediatric Surgeons and Novices.

Masakazu Murakami, Yumiko Tabata, Yumiko Iwamoto, Masato Ogata, Lynne Takada, Chihiro Kedoin, Yudai Tsuruno, Koshiro Sugita, Keisuke Yano, Shun Onishi and 2 more

Abstract readComparative StudyValidation Study
In one paragraph

Article in World journal of surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

12 authors.

Masakazu MurakamiDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.ORCID https://orcid.org/0000-0002-9247-4216
Yumiko TabataDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Yumiko IwamotoDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Masato OgataDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Lynne TakadaDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Chihiro KedoinDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Yudai TsurunoDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Koshiro SugitaDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Keisuke YanoDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.ORCID https://orcid.org/0000-0003-0417-3104
Shun OnishiDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Takafumi KawanoDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
Satoshi IeiriDepartment of Pediatric Surgery, Research Field in Medical and Health Sciences, Medical and Dental Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.ORCID https://orcid.org/0000-0002-1250-093X

Funding

Japan Society for the Promotion of Science 21K12754
6 · The paper itself

Abstract

backgroundLaparoscopic inguinal hernia repair is the most common procedure in the pediatric field and is one of the first pediatric endoscopic surgical procedures that a trainee should learn. Off-the-job training is important in pediatric surgery to compensate for the lack of experience due to the small number of cases. We developed a disease-specific simulator for laparoscopic percutaneous extraperitoneal closure (LPEC) of inguinal hernia. We compared the results of simulated surgery using this simulator between experts and novices.

methodsThe simulator was developed for a 1-year-old infant body size and allowed for training in needle manipulation unique to LPEC. The participants were pediatric surgeons and trainees and were divided into novice and experienced groups. The task involved simulated LPEC operations. The task completion time, three-dimensional characteristics of needle device manipulation evaluated by a magnetic three-dimensional position-measuring device, and accuracy of needle device manipulation evaluated by a checklist were compared. A questionnaire survey was conducted to evaluate the effectiveness of the simulator.

resultsThere were 35 and 18 participants in the experienced and novice groups, respectively. The experienced group had a significantly shorter task completion time than the novice group (308.1 vs. 695.8 s, p < 0.001), shorter total pass length (37591.1 vs. 102678.1 mm, p = 0.001), slower average velocity (79.2 vs. 136.8 mm/s, p = 0.002), and lower average acceleration than the novice group (8477.9 vs. 17775.5 mm/s

conclusionOur simulator could clearly differentiate between novice and experienced surgeons, and the validity of the LPEC simulator was established. The validity of the LPEC simulator was also proven using a questionnaire survey after simulation surgery.

Indexed as

Clinical CompetenceHernia, InguinalHerniorrhaphyLaparoscopyPediatricsSimulation TrainingHumansInfantMaledisease‐specific simulatoringuinal herniaLPECoff‐the‐job trainingpediatric endoscopic surgeryvalidation study

Identifiers

PMID41047468
PMCPMC12582136

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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.