Increased implantation and pregnancy rates obtained by placing the tip of the transfer catheter in the central area of the endometrial cavity

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dc.contributor.authorOliveira, João Batista Alcantara
dc.contributor.authorMartins, A. M V C [UNESP]
dc.contributor.authorBaruffi, R. L R
dc.contributor.authorMauri, A. L.
dc.contributor.authorPetersen, C. G.
dc.contributor.authorFelipe, V.
dc.contributor.authorContart, P.
dc.contributor.authorPontes, Anaglória [UNESP]
dc.contributor.authorFranco, J. G.
dc.contributor.institutionCtr. for Hum. Repro. Sinha Junqueira
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:09Z
dc.date.available2014-05-27T11:21:09Z
dc.date.issued2004-10-01
dc.description.abstractThe influence of endometrial cavity length (ECL) on implantation and pregnancy rates after 400 embryo transfers was studied prospectively in a population with the indication of IVF/intracytoplasmic sperm injection (ICSI). The tip of the transfer catheter was placed above or below the half point of the ECL in a randomized manner. Two analyses were performed: (i) absolute position (AP); embryo transfers were divided into three groups according to the distance between the end of the fundal endometrial surface and the catheter tip (DTC - distance tip catheter): AP 1 (n = 212), 10-15 mm; AP 2 (n = 158), 16-20 mm; and AP 3 (n = 30), ≥21 mm. (ii) relative position (RP) - embryo transfers were divided into four groups according to their RP [RP = (DTC/ECL) × 100]: RP 1 (n = 23), ≤40%; RP 2 (n = 177), 41-50%; RP 3 (n = 117), 51-60%; and RP 4 (n = 83), ≥61%. Analysis based on relative distance revealed significantly higher implantation and pregnancy rates (P < 0.05) in more central areas of the ECL. However, analysis based on absolute position did not reveal any difference. In conclusion, the present results demonstrated that implantation and pregnancy rates are influenced by the site of embryo transfer, with better results being obtained when the catheter tip is positioned close to the middle area of the endometrial cavity. In this respect, previous analysis of the ECL is the fundamental step in establishing the ideal site for embryo transfers.en
dc.description.affiliationCtr. for Hum. Repro. Sinha Junqueira, Rua D. Alberto Gonçalves, 14085-100 Ribeirão Preto, SP
dc.description.affiliationDepartment of Gynecology/Obstetrics Faculty of Medicine of Botucatu UNESP, Botucatu, SP
dc.description.affiliationUnespDepartment of Gynecology/Obstetrics Faculty of Medicine of Botucatu UNESP, Botucatu, SP
dc.format.extent435-441
dc.identifierhttp://dx.doi.org/10.1016/S1472-6483(10)61280-1
dc.identifier.citationReproductive BioMedicine Online, v. 9, n. 4, p. 435-441, 2004.
dc.identifier.doi10.1016/S1472-6483(10)61280-1
dc.identifier.issn1472-6483
dc.identifier.lattes0514178654667684
dc.identifier.scopus2-s2.0-5044228813
dc.identifier.urihttp://hdl.handle.net/11449/67884
dc.identifier.wosWOS:000226388900016
dc.language.isoeng
dc.relation.ispartofReproductive BioMedicine Online
dc.relation.ispartofjcr2.967
dc.relation.ispartofsjr1,343
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectEmbryo transfer
dc.subjectEmdometrial cavity length
dc.subjectImplantation rates
dc.subjectIVF/ICSI
dc.subjectPregnancy rates
dc.subjectnafarelin acetate
dc.subjectrecombinant follitropin
dc.subjectadult
dc.subjectcatheterization
dc.subjectclinical trial
dc.subjectcontrolled clinical trial
dc.subjectcontrolled study
dc.subjectembryo
dc.subjectembryo transfer
dc.subjectendometrium
dc.subjectfemale
dc.subjectfertilization in vitro
dc.subjecthuman
dc.subjectintracytoplasmic sperm injection
dc.subjectnidation
dc.subjectorgan size
dc.subjectovulation induction
dc.subjectpregnancy rate
dc.subjectprospective study
dc.subjectrandomized controlled trial
dc.subjecttreatment indication
dc.subjectAdult
dc.subjectCatheterization
dc.subjectEmbryo Transfer
dc.subjectEndometrium
dc.subjectFemale
dc.subjectFertilization in Vitro
dc.subjectHumans
dc.subjectPregnancy
dc.subjectProspective Studies
dc.subjectSperm Injections, Intracytoplasmic
dc.titleIncreased implantation and pregnancy rates obtained by placing the tip of the transfer catheter in the central area of the endometrial cavityen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes0514178654667684
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina, Botucatupt

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