Impact of the size of zona pellucida thinning area on vitrified-warmed cleavage-stage embryo transfers: a prospective, randomized study

被引：25
|
作者：
Hiraoka, Kenichiro [1 ]
Hiraoka, Kaori [1 ]
Horiuchi, Toshitaka [2 ]
Kusuda, Tomoyo [1 ]
Okano, Shinichiro [1 ]
Kinutani, Masayuki [1 ]
Kinutani, Kazuo [1 ]
机构：
[1] Kinutani Womens Clin, Naka Ku, Hiroshima 7300035, Japan
[2] Hiroshima Prefectural Univ, Grad Sch Appl Biosci, Hiroshima 7270023, Japan
来源：
JOURNAL OF ASSISTED REPRODUCTION AND GENETICS | 2009年 / 26卷 / 9-10期
关键词：
Cleavage-stage embryo transfer; Laser assisted hatching; Vitrification; Zona pellucida thinning; INTRACYTOPLASMIC SPERM INJECTION; CRYOPRESERVED-THAWED EMBRYOS; IN-VITRO FERTILIZATION; IMPLANTATION RATES; DIODE-LASER; PREGNANCY; VITRIFICATION; BLASTOCYSTS; TECHNOLOGY; OUTCOMES;
D O I：
10.1007/s10815-009-9350-6
中图分类号：
Q3 [遗传学];
学科分类号：
071007 ; 090102 ;
摘要：
The aim of this study was to determine if the size of zona pellucida thinning area by laser assisted hatching could affect the rates of pregnancy and implantation for vitrified-warmed embryo transfers at the cleavage-stage. A total of 120 vitrified-warmed cleavage-stage embryo transfers were randomly assigned to either quarter or half of zona pellucida thinning group. The rates of clinical pregnancy (46.7 versus 25.0%) and implantation (32.0 versus 16.2%) were significantly greater in the half thinning group than in the quarter thinning group (P = 0.0218 and P = 0.0090, respectively). The results of this investigation show that, in vitrified-warmed embryo transfers at the cleavage-stage, the size of zona pellucida thinning area by laser assisted hatching impacts the rate of clinical pregnancy and implantation and that half of zona pellucida thinning significantly increases both of these results compared with quarter of zona pellucida thinning.
引用
收藏
页码：515 / 521
页数：7
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