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The growing interest in fetoscopic SB repair (fSB-repair) prompts the need for appropriate training. We aimed to develop and validate a high-fidelity training model for fSB-repair. fSB-repair was simulated in the abdominal cavity and on the stomach of adult rabbits. Laparoscopic fetal surgeons served either as novices (n\u2009=\u20092) or experts (n\u2009=\u20093) based on their experience. Technical performance was evaluated using competency Cumulative Sum (CUSUM) analysis and the group splitting method. Main outcome measure for CUSUM competency was a composite binary outcome for surgical success, i.e. watertight repair, operation time\u2009\u2264\u2009180\u00a0min and Objective-Structured-Assessment-of-Technical-Skills (OSATS) score\u2009\u2265\u200918\/25. Construct validity was first confirmed since competency levels of novices and experts during their six first cases using both methods were significantly different. Criterion validity was also established as 33 consecutive procedures were needed for novices to reach competency using learning curve CUSUM, which is a number comparable to that of clinical fSB-repair. Finally, we surveyed expert fetal surgeons worldwide to assess face and content validity. Respondents (26\/49; 53%) confirmed it with\u2009\u2265\u200971% of scores for overall realism\u2009\u2265\u20094\/7 and usefulness\u2009\u2265\u20093\/5. We propose to use our high-fidelity model to determine and shorten the learning curve of laparoscopic fetal surgeons and retain operative skills.<\/jats:p>","DOI":"10.1038\/s41598-021-85607-6","type":"journal-article","created":{"date-parts":[[2021,3,17]],"date-time":"2021-03-17T11:03:33Z","timestamp":1615979013000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Validation of a high-fidelity training model for fetoscopic spina bifida surgery"],"prefix":"10.1038","volume":"11","author":[{"given":"Luc","family":"Joyeux","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Allan","family":"Javaux","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mary P.","family":"Eastwood","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felix R.","family":"De Bie","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gert","family":"Van den Bergh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rebecca S.","family":"Degliuomini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Simen","family":"Vergote","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Talita","family":"Micheletti","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Geertje","family":"Callewaert","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sebastien","family":"Ourselin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paolo","family":"De Coppi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frank","family":"Van Calenbergh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emmanuel","family":"Vander Poorten","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jan","family":"Deprest","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,3,17]]},"reference":[{"key":"85607_CR1","doi-asserted-by":"publisher","first-page":"993","DOI":"10.1056\/NEJMoa1014379","volume":"364","author":"NS Adzick","year":"2011","unstructured":"Adzick, N. 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All the instrumentation from the company KARL STORZ were part of a research loan (agreement 1705230948). Above mentioned support of KARL STORZ is in no way affiliated with any other service or procurement decisions on the part of the contractual parties.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"6109"}}