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ArtikelSpontaneous conceptions following successful ART are not associated with premature referral  
Oleh: Lande, Yechezkel ; Seidman, Daniel S. ; Maman, Ettie ; Baum, Micha
Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Human Reproduction vol. 27 no. 08 (Aug. 2012), page 2380-2383.
Topik: INFERTILITY; IVF; live birth rate; long-term follow up; cost-free cycles; spontaneous pregnancy
  • Perpustakaan FK
    • Nomor Panggil: H07.K.2012.02
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
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Isi artikelSTUDY QUESTION What is the rate of spontaneous live births after successful IVF treatment in a cost-free environment, and were couples who achieved a spontaneous live birth referred prematurely? SUMMARY ANSWER Despite unlimited IVF treatments offered free of charge, the spontaneous live birth rate following successful IVF remained unchanged compared with that cited in previous literature. Couples were not referred prematurely to IVF before fully utilizing other less invasive treatments. WHAT IS KNOWN ALREADY A significant number of infertile couples, who achieve their first live birth through assisted reproductive technology (ART), subsequently achieve a second live birth spontaneously. As IVF has become more widely available, it is used in less severe cases of infertility, perhaps explaining a rise in the subsequent spontaneous live birth rate after successful treatments. STUDY DESIGN, SIZE, DURATION This retrospective cohort study was performed at a university-based tertiary medical center. The study population included women aged <35 years, with primary infertility, referred for their first IVF treatment to the Sheba Medical Center IVF unit between 2001 and 2002 and followed up for 7 years. The primary outcome was spontaneous live birth rate following successful ART. Relevant data were obtained from the patient files and supplemented by a standardized telephone questionnaire. PARTICIPANTS/MATERIALS, SETTING, METHODS Of the 171 couples who met the study inclusion criteria, 6 refused to participate in the questionnaire and 31 couples were lost to follow-up. Of the 134 couples who participated, 109 achieved a first live birth with ART. After achieving their first live birth with ART, seven couples who began using contraception or separated or divorced were excluded. MAIN RESULTS AND THE ROLE OF CHANCE Of 102 couples who continued unprotected intercourse after successful ART, 22 subsequently achieved their second live birth spontaneously (21.6%). The women who achieved a second birth spontaneously were not referred earlier to IVF, and actually performed a higher number of ovulation induction cycles before initiating IVF, compared with women who did not conceive spontaneously. LIMITATIONS, REASONS FOR CAUTION This is a retrospective cohort study, and findings should be reaffirmed with a larger prospective randomized study comparing retreatment to achieve a second pregnancy with attempting to conceive spontaneously. WIDER IMPLICATIONS OF THE FINDINGS Our data suggests that young patients (<35 years), who previously conceived with IVF, without utilizing ICSI and with no known tubal pathology, should consider attempting to conceive spontaneously. STUDY FUNDING AND COMPETING INTEREST(S) No funding was obtained for this study and the authors have no competing interests.
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