Evidence map›Paper›PMID 25469133›Full record

ArticleIranian journal of reproductive medicine2014

Culturing surplus poor-quality embryos to blastocyst stage have positive predictive value of clinical pregnancy rate.

Hai Bo Zhu, Zhi Hong Zhang, Elfateh Fadlalla, Rui Xue Wang, Dong Feng Geng, Rui Zhi Liu

Abstract read
In one paragraph

Article in Iranian journal of reproductive medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Hai Bo ZhuReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.
Zhi Hong ZhangReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.
Elfateh FadlallaReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.
Rui Xue WangReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.
Dong Feng GengReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.
Rui Zhi LiuReproductive Medical Center, First Hospital of Jilin University, Changchun, Jilin, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundClinical reproductive centers produce large amounts of surplus poor-quality embryos annually, how to maximize the use of these embryos, and which of them have the potential to develop into blastocyst stage and influencing factors were lack of systematic research.

objectiveTo investigate the fate of surplus poor-quality embryos which were cultured to obtain blastocyst, determine the factors which may influence the blastulation, and discuss their application in predicting of the pregnancy outcomes. MATERIALS AND

methodsDay 3 (D3) after embryo transfer and freezing, surplus poor-quality embryos from IVF/ICSI cycles were cultured to blastocyst by the sequential method, then the blastulation outcomes were observed. Focusing on the blastulation rate of those embryos with different number cells and different embryonic grade; and last the relationship between the pregnancy outcomes of remained poor-quality embryos with successful blastulation or failed blastulation groups were studied.

resultsOf 127 patients with 569 poor-quality in vitro cultured embryos, there were formation of 248 blastocysts from 91 patients (43.59%), which lead to development of 138 high-quality blastocysts (24.25%). With the increase in cells number of D 3 blastomeres, the blastulation rate gradually increased, that, 7-cell blastomeres blastulation rate was the highest (70.59%), and 8-cell blastomeres is a little below (70.37%); while the embryonic levels and blastulation rate did not show this positive relationship. The clinical pregnancy rate and implantation rate of those who had successful blastulation (67.03% and 42.39%) were higher than of those who failed to develop to blastocyst (p=0.039).

conclusionDay 3 poor-quality embryos with successful blastulation or with failed blastulation had predictive value on pregnancy outcomes. For embryo transfer 7-8 cells grade III-IV embryo is better than 4-5 cells grade I-II embryo, in case of lack good-quality embryos.

Indexed as

BlastocystEmbryonic developmentFertilization in vitroIntracytoplasmicPregnancy rateSperm injections

Identifiers

PMID25469133
PMCPMC4248145

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