{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T18:10:01Z","timestamp":1789668601937,"version":"4.0.1"},"reference-count":17,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,5,20]],"date-time":"2024-05-20T00:00:00Z","timestamp":1716163200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp;amp; Obste"],"published-print":{"date-parts":[[2024,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>Obstetric forceps play an important role in safe childbirth, yet there is a lack of distinction between various forceps types in clinical practice. This study aimed to evaluate and compare perineal pressure and forces on the baby during nonrotational forceps\u2010assisted births using Simpson\u2010Braun forceps, Kielland forceps, and Thierry spatulas on a simulation model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This experimental study involved six obstetricians conducting 108 forceps\u2010assisted births on a simulation model. Instruments were assessed for their impact on perineal pressure, traction force, and operator\u2010assessed difficulty.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Thierry's spatulas exerted the lowest force on the baby, while Kielland forceps exhibited the lowest perineal pressure, though not statistically significant. An experienced obstetrician demonstrated less perineal pressure with Simpson forceps. Notably, no significant differences in difficulty were observed between instruments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study highlights distinctions in forceps performance, with Thierry spatulas applying the least force on the fetal head, while an experienced obstetrician fared better with Simpson forceps in terms of perineal pressure. Kielland forceps remain a viable alternative for nonrotational forceps births, showing comparable outcomes.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.15613","type":"journal-article","created":{"date-parts":[[2024,5,20]],"date-time":"2024-05-20T07:18:48Z","timestamp":1716189528000},"page":"641-647","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Which type of forceps is better for nonrotational operative births? A simulation study comparing Thierry spatulas and Simpson\u2010Braun and Kielland forceps"],"prefix":"10.1002","volume":"167","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8013-4732","authenticated-orcid":false,"given":"Marcos Javier","family":"Cuerva","sequence":"first","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"},{"name":"School of Medicine Universidad Aut\u00f3noma de Madrid  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pilar","family":"Villasante","sequence":"additional","affiliation":[{"name":"School of Medicine Universidad Aut\u00f3noma de Madrid  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariona","family":"Cruset","sequence":"additional","affiliation":[{"name":"Biotechnology  Madrid Alcal\u00e1 de Henares Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carmen","family":"Pintado","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marta","family":"Perez\u00a0De\u00a0Aguado","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marta","family":"Cortes","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco","family":"Lopez","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 Luis","family":"Bartha","sequence":"additional","affiliation":[{"name":"Department of Obstetrics Hospital Universitario La Paz  Madrid Spain"},{"name":"School of Medicine Universidad Aut\u00f3noma de Madrid  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,5,20]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bpobgyn.2019.02.002"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2016.01.045"},{"issue":"9","key":"e_1_2_9_4_1","article-title":"Instruments for assisted vaginal birth","volume":"9","author":"Verma GL","year":"2021","journal-title":"Cochrane Database Syst Rev"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bpobgyn.2018.08.002"},{"key":"e_1_2_9_6_1","unstructured":"Sociedad Espa\u00f1ola de Ginecolog\u00eda y Obstetricia. 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