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Titolo:
Blastocyst versus day 2 or 3 transfer
Autore:
Schoolcraft, WB; Gardner, DK;
Indirizzi:
Colorado Ctr Reprod Med, Englewood, CO 80110 USA Colorado Ctr Reprod Med Englewood CO USA 80110 d, Englewood, CO 80110 USA
Titolo Testata:
SEMINARS IN REPRODUCTIVE MEDICINE
fascicolo: 3, volume: 19, anno: 2001,
pagine: 259 - 268
SICI:
1526-8004(200109)19:3<259:BVD2O3>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
IN-VITRO FERTILIZATION; INTRACYTOPLASMIC SPERM INJECTION; PREIMPLANTATION EMBRYO DEVELOPMENT; IMPLANTATION RATES; RANDOMIZED TRIAL; PREDICTIVE VALUE; PREGNANCY RATES; HIGH RESPONDERS; MOUSE EMBRYOS; AMINO-ACIDS;
Keywords:
amino acids; ART; carbohydrates; culture; embryo; lVF;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
67
Recensione:
Indirizzi per estratti:
Indirizzo: Schoolcraft, WB Colorado Ctr Reprod Med, 799 E Hampden Ave,Suite 300, Englewood, CO 80110 USA Colorado Ctr Reprod Med 799 E Hampden Ave,Suite 300 Englewood CO USA 80110
Citazione:
W.B. Schoolcraft e D.K. Gardner, "Blastocyst versus day 2 or 3 transfer", SEMIN REP M, 19(3), 2001, pp. 259-268

Abstract

The formulation of new sequential culture media, capable of supporting thedevelopment of viable human blastocysts, has reopened the discussion regarding the best day for embryo transfer following in vitro fertilization (IVF). Although several laboratories have reported overall increases in implantation rate and IVF efficiency following the transfer of blastocysts, othershave failed to observe any benefit from extended culture. While culture conditions for the mammalian embryo undoubtedly have improved significantly over the past few years, relatively little attention has been paid to the quality of oocytes derived from ovarian hyperstimulation or the quality and receptivity of the endometrium following such hormonal regimes. It appears that differences in controlled ovarian hyperstimulation are among the major factors determining embryo quality and subsequent implantation. This therefore has confounded comparisons between different laboratories. In spite of this there are a growing number of reports demonstrating that the advantages of extended culture and blastocyst transfer, such as increased implantation rates, are not limited to specific groups of patients or specific etiologies. Rather, blastocyst transfer may be of benefit to the majority if not all patients attending for IVF.

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Documento generato il 07/06/20 alle ore 06:15:10