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Erschienen in: Journal of Assisted Reproduction and Genetics 11/2013

01.11.2013 | Assisted Reproduction Technologies

Accumulation of oocytes from a few modified natural cycles to improve IVF results: a pilot study

verfasst von: Ermanno Greco, Katarzyna Litwicka, Cristiana Arrivi, Maria Teresa Varricchio, Daniela Zavaglia, Cecilia Mencacci, Maria Giulia Minasi

Erschienen in: Journal of Assisted Reproduction and Genetics | Ausgabe 11/2013

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Abstract

Purpose

To evaluate the role of co-transfer of embryos derived from vitrified oocytes accumulated during the previous modified natural cycles and an embryo developed from the last one as an alternative to repetitive single embryo transfer in a fresh modified natural cycle.

Methods

Thirty-six patients underwent ICSI procedure with three frozen natural oocytes supplemented by a fresh one obtained from the fourth modified natural cycle. Thirty-one controls received at least three consecutive single embryo transfer in a fresh modified natural cycle.

Results

In the study group the oocyte retrieval, survival and total fertilization rate were 73.0 %, 78.1 %, and 64.5 %, respectively. Fifty-two embryos were transferred in 29 transfers. In the control group the oocyte retrieval and fertilization rate was 77.4 % and 83.7 %, respectively. Fifty single embryo transfers were performed. Of a total 14 pregnancies obtained in the study group 10 were defined as clinical and 4 as abortions. In the control group a total of 8 single clinical pregnancies and 2 miscarriages were encountered. The overall (20.0 % vs 48.2 %) and the clinical (16.0 % vs 34.4 %) pregnancy rate were significantly higher in the study group having cumulative embryo transfer following the oocyte accumulation.

Conclusions

These data demonstrate that the co-transfer of embryos derived from vitrified oocytes accumulated during the previous modified natural cycles and an embryo developed from the last fresh modified natural cycle assure an excellent clinical outcome with the overall and clinical pregnancy rate significantly higher compared to the repetitive single embryo transfer in a fresh modified natural cycle.
Literatur
1.
Zurück zum Zitat Steptoe PC, Edwards RG. Birth after the reimplantation of a human embryo. Lancet. 1978;12:366.CrossRef Steptoe PC, Edwards RG. Birth after the reimplantation of a human embryo. Lancet. 1978;12:366.CrossRef
2.
Zurück zum Zitat Pelinck MJ, Hoek A, Simons AHM, Heineman MJ. Efficacy of natural Cycle IVF: a review of the literature. Hum Reprod Update. 2002;8:129–39.PubMedCrossRef Pelinck MJ, Hoek A, Simons AHM, Heineman MJ. Efficacy of natural Cycle IVF: a review of the literature. Hum Reprod Update. 2002;8:129–39.PubMedCrossRef
3.
Zurück zum Zitat Pelinck MJ, Vogel NE, Hoek A, Simons AH, Arts EG, Mochtar MH, et al. Cumulative pregnancy rates after three cycles of minimal stimulation IVF and results according to subfertility diagnosis: a multicentre cohort study. Hum Reprod. 2006;21:2375–83.PubMedCrossRef Pelinck MJ, Vogel NE, Hoek A, Simons AH, Arts EG, Mochtar MH, et al. Cumulative pregnancy rates after three cycles of minimal stimulation IVF and results according to subfertility diagnosis: a multicentre cohort study. Hum Reprod. 2006;21:2375–83.PubMedCrossRef
4.
Zurück zum Zitat Pelinck MJ, Vogel NEA, Arts EGJM, Simons AHM, Heineman MJ, Hock A. Cumulative pregnancy rates after a maximum of nine cycles of modified natural cycle IVF and analysis of patient drop-out. Hum Reprod. 2007;22:2463–70.PubMedCrossRef Pelinck MJ, Vogel NEA, Arts EGJM, Simons AHM, Heineman MJ, Hock A. Cumulative pregnancy rates after a maximum of nine cycles of modified natural cycle IVF and analysis of patient drop-out. Hum Reprod. 2007;22:2463–70.PubMedCrossRef
5.
Zurück zum Zitat Kadoch IJ, Philips SJ, Bissonnette F. Modified natural-cycle in vitro fertilization should be considered as the first approach in young poor responders. Fertil Steril. 2011;96:1066–8.PubMedCrossRef Kadoch IJ, Philips SJ, Bissonnette F. Modified natural-cycle in vitro fertilization should be considered as the first approach in young poor responders. Fertil Steril. 2011;96:1066–8.PubMedCrossRef
6.
Zurück zum Zitat Surrey ES, Schoolcraft WB. Evaluating strategies for improving ovarian response of the poor responder undergoing assisted reproductive techniques. Fertil Steril. 2000;73:667–76.PubMedCrossRef Surrey ES, Schoolcraft WB. Evaluating strategies for improving ovarian response of the poor responder undergoing assisted reproductive techniques. Fertil Steril. 2000;73:667–76.PubMedCrossRef
7.
Zurück zum Zitat Ubaldi FM, Rienzi L, Ferrero S, Baroni E, Sapienza F, Cobellis L, et al. Management of poor responder in IVF. Reprod Biomed Online. 2005;10:235–46.PubMedCrossRef Ubaldi FM, Rienzi L, Ferrero S, Baroni E, Sapienza F, Cobellis L, et al. Management of poor responder in IVF. Reprod Biomed Online. 2005;10:235–46.PubMedCrossRef
8.
Zurück zum Zitat Dor J, Seidman DS, AmudaI E, Bider D, Levran D, Mahiach S. Adjuvant growth hormone therapy in poor responders to in-vitro fertilization: a prospective randomized placebo-controlled double-blind study. Hum Reprod. 1995;10:40–3.PubMedCrossRef Dor J, Seidman DS, AmudaI E, Bider D, Levran D, Mahiach S. Adjuvant growth hormone therapy in poor responders to in-vitro fertilization: a prospective randomized placebo-controlled double-blind study. Hum Reprod. 1995;10:40–3.PubMedCrossRef
9.
Zurück zum Zitat Garcia-Velasco JA, Isaza V, Requena A, Martinez-Salazar FJ, Landazabal A, Remohi J, et al. High doses of gonadotrophins combined with stop versus non-stop protocol of GnRH analogue administration in low responder IVF patients: a prospective, randomized, controlled trial. Hum Reprod. 2000;15:2292–6.PubMedCrossRef Garcia-Velasco JA, Isaza V, Requena A, Martinez-Salazar FJ, Landazabal A, Remohi J, et al. High doses of gonadotrophins combined with stop versus non-stop protocol of GnRH analogue administration in low responder IVF patients: a prospective, randomized, controlled trial. Hum Reprod. 2000;15:2292–6.PubMedCrossRef
10.
Zurück zum Zitat Morgia F, Sbracia M, Schimberni M, Giallonardo A, Piscitelli C, Giannini P, et al. A controlled trial of natural cycle versus microdose gonadotrophin-releasing hormone analog flare cycles in poor responders undergoing in vitro fertilization. Fertil Steril. 2004;81:1542–7.PubMedCrossRef Morgia F, Sbracia M, Schimberni M, Giallonardo A, Piscitelli C, Giannini P, et al. A controlled trial of natural cycle versus microdose gonadotrophin-releasing hormone analog flare cycles in poor responders undergoing in vitro fertilization. Fertil Steril. 2004;81:1542–7.PubMedCrossRef
11.
Zurück zum Zitat Kim CH, Kim SR, Cheon YP, Kim SH, Chae HD, Kang BM. Minimal stimulation using gonadotrophin-releasing hormone (GnRH) antagonist and recombinant human follicle-stimulating hormone versus GnRH antagonist multiple-dose protocol in low responders undergoing in vitro/intracytoplasmatic sperm injection. Fertil Steril. 2009;92:2082–4.PubMedCrossRef Kim CH, Kim SR, Cheon YP, Kim SH, Chae HD, Kang BM. Minimal stimulation using gonadotrophin-releasing hormone (GnRH) antagonist and recombinant human follicle-stimulating hormone versus GnRH antagonist multiple-dose protocol in low responders undergoing in vitro/intracytoplasmatic sperm injection. Fertil Steril. 2009;92:2082–4.PubMedCrossRef
12.
Zurück zum Zitat Fábregues F, Peñarrubia J, Creus M, Manau D, Casals G, Carmona F, et al. Transdermal testosterone may improve ovarian response to gonadotrophins in low-responders IVF patient: a randomized, clinical trial. Hum Reprod. 2008;24:349–59.PubMedCrossRef Fábregues F, Peñarrubia J, Creus M, Manau D, Casals G, Carmona F, et al. Transdermal testosterone may improve ovarian response to gonadotrophins in low-responders IVF patient: a randomized, clinical trial. Hum Reprod. 2008;24:349–59.PubMedCrossRef
13.
Zurück zum Zitat Diluigi AJ, Engmann L, Schmidt DW, Benadiva CA, Nulsen JC. A randomized trial of microdose leuprolide acetate protocol versus luteal phase ganirelix protocol in predicted poor responders. Fertil Steril. 2011;95:2531–3.PubMedCrossRef Diluigi AJ, Engmann L, Schmidt DW, Benadiva CA, Nulsen JC. A randomized trial of microdose leuprolide acetate protocol versus luteal phase ganirelix protocol in predicted poor responders. Fertil Steril. 2011;95:2531–3.PubMedCrossRef
14.
Zurück zum Zitat Polyzos NP, Blockeel C, Verpoest W, De Vos M, Stoop D, Vloeberghs V, et al. Live birth rates following natural cycle IVF in women with poor ovarian response according to the Bologna criteria. Hum Reprod. 2012;27:3481–6.PubMedCrossRef Polyzos NP, Blockeel C, Verpoest W, De Vos M, Stoop D, Vloeberghs V, et al. Live birth rates following natural cycle IVF in women with poor ovarian response according to the Bologna criteria. Hum Reprod. 2012;27:3481–6.PubMedCrossRef
15.
16.
Zurück zum Zitat D’Hooghe TM, Denys B, Spiessens C, Meulman C, Debrock S. Is the endometriosis recurrence rate increased after ovarian hyperstimulation? Fertil Steril. 2006;86:283–90.PubMedCrossRef D’Hooghe TM, Denys B, Spiessens C, Meulman C, Debrock S. Is the endometriosis recurrence rate increased after ovarian hyperstimulation? Fertil Steril. 2006;86:283–90.PubMedCrossRef
17.
Zurück zum Zitat Hojgaard A, Ingerslev HJ, Dinesen J. Friendly IVF: patient opinions. Hum Reprod. 2001;16:1391–6.PubMedCrossRef Hojgaard A, Ingerslev HJ, Dinesen J. Friendly IVF: patient opinions. Hum Reprod. 2001;16:1391–6.PubMedCrossRef
18.
Zurück zum Zitat Nargund G, Waterstone J, Bland J, Philips Z, Parsons J, Campbell S. Cumulative conception and live birth rates in natural (unstimulated) IVF cycles. Hum Reprod. 2001;16:259–62.PubMedCrossRef Nargund G, Waterstone J, Bland J, Philips Z, Parsons J, Campbell S. Cumulative conception and live birth rates in natural (unstimulated) IVF cycles. Hum Reprod. 2001;16:259–62.PubMedCrossRef
19.
Zurück zum Zitat Aboulghar MA, Mansour RT, Serour GA, Amin YM, Sattar MA, Ramzy AM. In vitro fertilization in a spontaneous cycle: a successful simple protocol. J Obstet Gynaecol. 1995;21:337–40.CrossRef Aboulghar MA, Mansour RT, Serour GA, Amin YM, Sattar MA, Ramzy AM. In vitro fertilization in a spontaneous cycle: a successful simple protocol. J Obstet Gynaecol. 1995;21:337–40.CrossRef
20.
Zurück zum Zitat Keizer M, Schelling K, Pelinck M, Hoek A, Simons A, Heineman M. Larger birth weight in singletons born after minimal stimulation IVF compared to singletons born after COH-IVF. Fertil Steril. 2005;84:81–2.CrossRef Keizer M, Schelling K, Pelinck M, Hoek A, Simons A, Heineman M. Larger birth weight in singletons born after minimal stimulation IVF compared to singletons born after COH-IVF. Fertil Steril. 2005;84:81–2.CrossRef
21.
Zurück zum Zitat Rongieres-Bertrand C, Olivennes F, Righini C, Fanchin R, Taieb J, Hamamah S, et al. Revival of the natural cycles in in-vitro fertilization with the use of a new gonadotrophin-releasing hormone antagonist (Cetrorelix): a pilot study with minimal stimulation. Hum Reprod. 1999;14:683–8.PubMedCrossRef Rongieres-Bertrand C, Olivennes F, Righini C, Fanchin R, Taieb J, Hamamah S, et al. Revival of the natural cycles in in-vitro fertilization with the use of a new gonadotrophin-releasing hormone antagonist (Cetrorelix): a pilot study with minimal stimulation. Hum Reprod. 1999;14:683–8.PubMedCrossRef
22.
Zurück zum Zitat Vogel NE, Pelinck MJ, Arts EG, Hoek A, Simons AH, Heineman MJ. Effectiveness of the modified natural cycle ICSI: results of a pilot study. Fertil Steril. 2003;80:P-7.CrossRef Vogel NE, Pelinck MJ, Arts EG, Hoek A, Simons AH, Heineman MJ. Effectiveness of the modified natural cycle ICSI: results of a pilot study. Fertil Steril. 2003;80:P-7.CrossRef
23.
Zurück zum Zitat Castel-Branco A, Achour-Frydman N, Kadoch J, Franchin R, Tachdjian G, Frydman R. In vitro fertilization and embryo transfer in seminatural cycles for patients with ovarian aging. Fertil Steril. 2005;84:875–80.CrossRef Castel-Branco A, Achour-Frydman N, Kadoch J, Franchin R, Tachdjian G, Frydman R. In vitro fertilization and embryo transfer in seminatural cycles for patients with ovarian aging. Fertil Steril. 2005;84:875–80.CrossRef
24.
Zurück zum Zitat Schimberni M, Morgia F, Colabianchi J, Giallonardo A, Piscitelli C, Giannini P, et al. Natural-cycle in vitro fertilization in poor responder patients: a survey of 500 consecutive cycles. Fertil Steril. 2009;92:1297–301.PubMedCrossRef Schimberni M, Morgia F, Colabianchi J, Giallonardo A, Piscitelli C, Giannini P, et al. Natural-cycle in vitro fertilization in poor responder patients: a survey of 500 consecutive cycles. Fertil Steril. 2009;92:1297–301.PubMedCrossRef
25.
Zurück zum Zitat Paulson RJ, Sauer MV, Francis MM, Macaso TM, Lobo RA. In vitro fertilization in unstimulated cycles: the University of Southern California experience. Fertil Steril. 1992;57:290–3.PubMed Paulson RJ, Sauer MV, Francis MM, Macaso TM, Lobo RA. In vitro fertilization in unstimulated cycles: the University of Southern California experience. Fertil Steril. 1992;57:290–3.PubMed
26.
Zurück zum Zitat Cobo A, Garrido N, Crespo J, José R, Pellicer A. Accumulation of oocytes: a new strategy for managing low-responder patients. Reprod Biomed Online. 2012;24:424–32.PubMedCrossRef Cobo A, Garrido N, Crespo J, José R, Pellicer A. Accumulation of oocytes: a new strategy for managing low-responder patients. Reprod Biomed Online. 2012;24:424–32.PubMedCrossRef
27.
Zurück zum Zitat Nagy ZP, Chang CC, Shapiro DB, Bernal DP, Kort HI, Vajta G. The efficacy and safety of human oocyte vitrification. Semin Reprod Med. 2009;27:450–5.PubMedCrossRef Nagy ZP, Chang CC, Shapiro DB, Bernal DP, Kort HI, Vajta G. The efficacy and safety of human oocyte vitrification. Semin Reprod Med. 2009;27:450–5.PubMedCrossRef
28.
Zurück zum Zitat Greco E, Litwicka K, Ferrero S, Baroni E, Sapienza F, Rienzi L, et al. GnRH-antagonists in ovarian stimulation for ICSI with oocyte restriction: a matched, controlled study. Reprod Biomed Online. 2007;14:572–8.PubMedCrossRef Greco E, Litwicka K, Ferrero S, Baroni E, Sapienza F, Rienzi L, et al. GnRH-antagonists in ovarian stimulation for ICSI with oocyte restriction: a matched, controlled study. Reprod Biomed Online. 2007;14:572–8.PubMedCrossRef
29.
Zurück zum Zitat Ubaldi F, Anniballo R, Romano S, Baroni E, Albricci L, Colamaria S. Cumulative ongoing pregnancy rate achieved with oocyte vitrification and cleavage stage transfer without embryo selection in a standard infertility program. Hum Reprod. 2010;25:1199–205.PubMedCrossRef Ubaldi F, Anniballo R, Romano S, Baroni E, Albricci L, Colamaria S. Cumulative ongoing pregnancy rate achieved with oocyte vitrification and cleavage stage transfer without embryo selection in a standard infertility program. Hum Reprod. 2010;25:1199–205.PubMedCrossRef
30.
Zurück zum Zitat Basir GS, O WS, Ng EH, Ho PC. Morphometric analysis of peri-implantation endometrium in patients having excessively high oestradiol concentrations after ovarian stimulation. Hum Reprod. 2001;16:435–40.PubMedCrossRef Basir GS, O WS, Ng EH, Ho PC. Morphometric analysis of peri-implantation endometrium in patients having excessively high oestradiol concentrations after ovarian stimulation. Hum Reprod. 2001;16:435–40.PubMedCrossRef
31.
Zurück zum Zitat McAvey B, Zapantis A, Jindal SK, Lieman HJ, Polotsky AJ. How many eggs are needed to produce an assisted reproductive technology baby: is more always better? Fertil Steril. 2011;96:332–5.PubMedCrossRef McAvey B, Zapantis A, Jindal SK, Lieman HJ, Polotsky AJ. How many eggs are needed to produce an assisted reproductive technology baby: is more always better? Fertil Steril. 2011;96:332–5.PubMedCrossRef
32.
Zurück zum Zitat Reyftmann L, Dechaud H, Loup V, Anahory T, Brunet-Joyeux C, Lacroix N. Natural cycle in vitro fertilization cycle in poor responders. Gynecol Obstet Fertil. 2007;35:352–8.PubMedCrossRef Reyftmann L, Dechaud H, Loup V, Anahory T, Brunet-Joyeux C, Lacroix N. Natural cycle in vitro fertilization cycle in poor responders. Gynecol Obstet Fertil. 2007;35:352–8.PubMedCrossRef
33.
Zurück zum Zitat Kim TJ, Laufer LR, Hong SW. Vitrification of oocytes produces high pregnancy rate when carried out in fertile women. Fertil Steril. 2010;93:467–74.PubMedCrossRef Kim TJ, Laufer LR, Hong SW. Vitrification of oocytes produces high pregnancy rate when carried out in fertile women. Fertil Steril. 2010;93:467–74.PubMedCrossRef
34.
Zurück zum Zitat Oktay K, Cil AP, Bang H. Efficiency of oocyte cryopreservation: a meta-analysis. Fertil Steril. 2006;86:70–80.PubMedCrossRef Oktay K, Cil AP, Bang H. Efficiency of oocyte cryopreservation: a meta-analysis. Fertil Steril. 2006;86:70–80.PubMedCrossRef
35.
Zurück zum Zitat Tulandi T, Huang JYJ, Tan SL. Preservation of femal fertility. An essential progress. Obstet Gynecol. 2008;112:1160–72.PubMedCrossRef Tulandi T, Huang JYJ, Tan SL. Preservation of femal fertility. An essential progress. Obstet Gynecol. 2008;112:1160–72.PubMedCrossRef
36.
Zurück zum Zitat Homburg R, van der Veen F, Silber SJ. Oocyte vitrification-women’s emancipation set in stone. Fertil Steril. 2009;91:1319–20.PubMedCrossRef Homburg R, van der Veen F, Silber SJ. Oocyte vitrification-women’s emancipation set in stone. Fertil Steril. 2009;91:1319–20.PubMedCrossRef
37.
Zurück zum Zitat Cobo A, Kuwayama M, Pérez S, Ruiz A, Pellicer A, Remohí J. Comparision of concomitant outcome achieved with fresh and cryopreserved donor oocytes vitirified by the Cryotop method. Fertil Steril. 2008;89:1657–64.PubMedCrossRef Cobo A, Kuwayama M, Pérez S, Ruiz A, Pellicer A, Remohí J. Comparision of concomitant outcome achieved with fresh and cryopreserved donor oocytes vitirified by the Cryotop method. Fertil Steril. 2008;89:1657–64.PubMedCrossRef
38.
Zurück zum Zitat Porcu E, Fabbri R, Damiano G, Giunchi S, Fratto R, Ciotti PM, et al. Clinical experience and application of oocyte cryopreservation. Mol Cell Endocrinol. 2000;27:33–7.CrossRef Porcu E, Fabbri R, Damiano G, Giunchi S, Fratto R, Ciotti PM, et al. Clinical experience and application of oocyte cryopreservation. Mol Cell Endocrinol. 2000;27:33–7.CrossRef
39.
Zurück zum Zitat Kuwayama M. Highly efficient vitrification for cryopresevation of human oocytes and embryos. Theriogenology. 2007;67:73–80.PubMedCrossRef Kuwayama M. Highly efficient vitrification for cryopresevation of human oocytes and embryos. Theriogenology. 2007;67:73–80.PubMedCrossRef
40.
Zurück zum Zitat Kuwayama M, Vajta G, Kato O, Leibo SP. Highly efficient vitrification method of cryopresevation of human oocytes. Reprod Biomed Online. 2005;11:300–8.PubMedCrossRef Kuwayama M, Vajta G, Kato O, Leibo SP. Highly efficient vitrification method of cryopresevation of human oocytes. Reprod Biomed Online. 2005;11:300–8.PubMedCrossRef
41.
Zurück zum Zitat Noyes N, Porcu E, Borini A. Over 900 oocyte cryopreservation babies born with no apparent increase in congenital anomalies. Reprod Biomed Online. 2009;18:769–76.PubMedCrossRef Noyes N, Porcu E, Borini A. Over 900 oocyte cryopreservation babies born with no apparent increase in congenital anomalies. Reprod Biomed Online. 2009;18:769–76.PubMedCrossRef
42.
Zurück zum Zitat Minasi MG, Fabozzi G, Casciani V, Ferrero S, Litwicka K, Greco E. Efficiency of slush nitrogen vitrification of human oocytes vitirified with or without cumulus cells in relation to survival rate and meiotic spindle competence. Fertil Steril. 2012;5:1220–5.CrossRef Minasi MG, Fabozzi G, Casciani V, Ferrero S, Litwicka K, Greco E. Efficiency of slush nitrogen vitrification of human oocytes vitirified with or without cumulus cells in relation to survival rate and meiotic spindle competence. Fertil Steril. 2012;5:1220–5.CrossRef
43.
Zurück zum Zitat Wennerholm UB, Soderstrom-Anttila V, Bergh C, Aittomaki K, Hazekamp J, Nygren KG, et al. Children born after cryopreservation of embryos or oocytes: a systematic review of outcome data. Hum Reprod. 2009;24:2158–72.PubMedCrossRef Wennerholm UB, Soderstrom-Anttila V, Bergh C, Aittomaki K, Hazekamp J, Nygren KG, et al. Children born after cryopreservation of embryos or oocytes: a systematic review of outcome data. Hum Reprod. 2009;24:2158–72.PubMedCrossRef
44.
Zurück zum Zitat Vandervorst M, Liebaers I, Sermon K, Staessen C, De Vos A, Van de Velde H, et al. Successful pre-implantation genetic diagnosis is related to the number of available cumulus-oocyte complexes. Hum Reprod. 1998;13:3169–76.PubMedCrossRef Vandervorst M, Liebaers I, Sermon K, Staessen C, De Vos A, Van de Velde H, et al. Successful pre-implantation genetic diagnosis is related to the number of available cumulus-oocyte complexes. Hum Reprod. 1998;13:3169–76.PubMedCrossRef
45.
Zurück zum Zitat Ludwig M, al-Hasani S, Küpker W, Bauer O, Diedrich K. A new indication for an intracytoplasmic sperm injection procedure outside male factor infertility. Eur J Obstet Gynecol Reprod Biol. 1997;75:207–10.PubMedCrossRef Ludwig M, al-Hasani S, Küpker W, Bauer O, Diedrich K. A new indication for an intracytoplasmic sperm injection procedure outside male factor infertility. Eur J Obstet Gynecol Reprod Biol. 1997;75:207–10.PubMedCrossRef
46.
Zurück zum Zitat Palermo G, Joris H, Devroey P, Van Steirteghem AC. Pregnancies after intracytoplasmatic sperm injection of single spermatozoon into an oocyte. Lancet. 1992;340:17–8.PubMedCrossRef Palermo G, Joris H, Devroey P, Van Steirteghem AC. Pregnancies after intracytoplasmatic sperm injection of single spermatozoon into an oocyte. Lancet. 1992;340:17–8.PubMedCrossRef
47.
Zurück zum Zitat Nagy ZP, Liu J, Joris H, Verheyen G, Tournaye H, Camus M, et al. The results of intracytoplasmatic sperm injection is not related to any of the three basic sperm parameters. Hum Reprod. 1995;10:1123–9.PubMed Nagy ZP, Liu J, Joris H, Verheyen G, Tournaye H, Camus M, et al. The results of intracytoplasmatic sperm injection is not related to any of the three basic sperm parameters. Hum Reprod. 1995;10:1123–9.PubMed
48.
Zurück zum Zitat Melie NA, Adeniyi OA, Igbineweka OM, Ajayi RA. Predictive value of the number of oocytes retrieved at ultrasound-directed follicular aspiration with regard to fertilization rates and pregnancy outcome in intracytoplasmic sperm injection treatment cycles. Fertil Steril. 2003;80:1376–9.PubMedCrossRef Melie NA, Adeniyi OA, Igbineweka OM, Ajayi RA. Predictive value of the number of oocytes retrieved at ultrasound-directed follicular aspiration with regard to fertilization rates and pregnancy outcome in intracytoplasmic sperm injection treatment cycles. Fertil Steril. 2003;80:1376–9.PubMedCrossRef
49.
Zurück zum Zitat Verberg MFG, Eijkemans MJC, Macklon NS, Heijnen EMEW, Baart EB, Hofmann FP. The clinical significance of the retrieval of a low number of oocytes following mild ovarian stimulation for IVF: a meta-analysis. Hum Reprod Update. 2009;15:5–12.PubMedCrossRef Verberg MFG, Eijkemans MJC, Macklon NS, Heijnen EMEW, Baart EB, Hofmann FP. The clinical significance of the retrieval of a low number of oocytes following mild ovarian stimulation for IVF: a meta-analysis. Hum Reprod Update. 2009;15:5–12.PubMedCrossRef
50.
Zurück zum Zitat Hohmann FP, Macklon NS, Fauser BCJM. A randomized comparision of two ovarian stimulation protocols with gonadotrophin-releasing hormone (GnRH) antagonist cotreatment for in vitro fertilization commencing recombinant follicle-stimulating hormone on cycle day 2 or 5 with the standard long GnRH agonist protocol. J Clin Endocrinol Metab. 2003;88:166–73.PubMedCrossRef Hohmann FP, Macklon NS, Fauser BCJM. A randomized comparision of two ovarian stimulation protocols with gonadotrophin-releasing hormone (GnRH) antagonist cotreatment for in vitro fertilization commencing recombinant follicle-stimulating hormone on cycle day 2 or 5 with the standard long GnRH agonist protocol. J Clin Endocrinol Metab. 2003;88:166–73.PubMedCrossRef
51.
Zurück zum Zitat Timeva T, Milachich T, Antonova I, Arabaji T, Shterev A, Hatim O. Correlation between number of retrive oocytes and pregnancy rate after in vitro fertilization/intracytoplasmic sperm injection. Sci World J. 2006;6:686–90.CrossRef Timeva T, Milachich T, Antonova I, Arabaji T, Shterev A, Hatim O. Correlation between number of retrive oocytes and pregnancy rate after in vitro fertilization/intracytoplasmic sperm injection. Sci World J. 2006;6:686–90.CrossRef
52.
Zurück zum Zitat Panadian Z, Bhattacharya S, Ozturk O, Serour GI, Templeton A. Number of embryos for transfer following in-vitro fertilization or intra-cytoplasmic sperm injection. Cochrane Database Syst Rev. 2004;18, CD003416. Panadian Z, Bhattacharya S, Ozturk O, Serour GI, Templeton A. Number of embryos for transfer following in-vitro fertilization or intra-cytoplasmic sperm injection. Cochrane Database Syst Rev. 2004;18, CD003416.
53.
Zurück zum Zitat Panadian Z, Bhattacharya S, Ozturk O, Serour GI, Templeton A. Number of embryos for transfer following in-vitro fertilization or intra-cytoplasmic sperm injection. Cochrane Database Syst Rev. 2009;18, CD003416. Panadian Z, Bhattacharya S, Ozturk O, Serour GI, Templeton A. Number of embryos for transfer following in-vitro fertilization or intra-cytoplasmic sperm injection. Cochrane Database Syst Rev. 2009;18, CD003416.
54.
Zurück zum Zitat Jonsdottir I, Lundin K, Bergh C. Double embryo transfer gives good pregnancy and live birth rates in poor responders with a modest increase in multiple birth rates: results from an observational study. Acta Obstet Gynecol Scand. 2011;90:761–6.PubMedCrossRef Jonsdottir I, Lundin K, Bergh C. Double embryo transfer gives good pregnancy and live birth rates in poor responders with a modest increase in multiple birth rates: results from an observational study. Acta Obstet Gynecol Scand. 2011;90:761–6.PubMedCrossRef
Metadaten
Titel
Accumulation of oocytes from a few modified natural cycles to improve IVF results: a pilot study
verfasst von
Ermanno Greco
Katarzyna Litwicka
Cristiana Arrivi
Maria Teresa Varricchio
Daniela Zavaglia
Cecilia Mencacci
Maria Giulia Minasi
Publikationsdatum
01.11.2013
Verlag
Springer US
Erschienen in
Journal of Assisted Reproduction and Genetics / Ausgabe 11/2013
Print ISSN: 1058-0468
Elektronische ISSN: 1573-7330
DOI
https://doi.org/10.1007/s10815-013-0103-1

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ICI-Therapie in der Schwangerschaft wird gut toleriert

Müssen sich Schwangere einer Krebstherapie unterziehen, rufen Immuncheckpointinhibitoren offenbar nicht mehr unerwünschte Wirkungen hervor als andere Mittel gegen Krebs.

Weniger postpartale Depressionen nach Esketamin-Einmalgabe

Bislang gibt es kein Medikament zur Prävention von Wochenbettdepressionen. Das Injektionsanästhetikum Esketamin könnte womöglich diese Lücke füllen.

Bei RSV-Impfung vor 60. Lebensjahr über Off-Label-Gebrauch aufklären!

22.04.2024 DGIM 2024 Kongressbericht

Durch die Häufung nach der COVID-19-Pandemie sind Infektionen mit dem Respiratorischen Synzytial-Virus (RSV) in den Fokus gerückt. Fachgesellschaften empfehlen eine Impfung inzwischen nicht nur für Säuglinge und Kleinkinder.

Update Gynäkologie

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