ArticleInternational journal of women's health2011
Denudation and sperm injection interval timing: impact on outcome of intracytoplasmic sperm injection.
Article in International journal of women's health, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.
- Effect of the time interval between oocyte retrieval and ICSI on embryo development and reproductive outcomes: a systematic review.Reproductive biology and endocrinology : RB&E · 2021Pooled it
- What is the optimal timing of intracytoplasmic sperm injection (ICSI) after EGG retrieval? A randomized controlled trial.Journal of assisted reproduction and genetics · 2021Trial
- Examining the impact of denudation and ICSI timing on embryological and clinical outcomes in oocyte donation cycles.Journal of assisted reproduction and genetics · 2026Article
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGiven the importance of timing of denudation and oocyte injection during assisted reproductive technology cycles, a study was undertaken of the impact of timing on the outcome of intracytoplasmic sperm injection in a cohort of patients from a private in vitro fertilization center.
methodsThe study included patients who underwent fresh intracytoplasmic sperm injection-embryo transfer by a single embryologist and gynecologist over a two-year period (January 2008 to March 2010). The primary outcome measure was the number of mature oocytes, and clinical pregnancy was the secondary outcome measure.
resultsThere was no significant difference between the three groups with respect to female age, but Group 3 showed a higher mean number of cumulus oopherus (14.46 versus 14.19), mature oocytes at time of denudation (12.72 versus 11.71), metaphase II injected (13.04 versus 11.85), and fertilized oocytes (9.75 versus 8.25) than Group 2. Group 2 showed a higher number of cumulus oopherus (14.19 versus 13.11), mature oocytes at time of denudation (11.71 versus 9.37), metaphase II injected (11.85 versus 9.7), and fertilized oocytes (8.25 versus 6.86) than Group 1. The maturation index, as well as positive clinical pregnancies, was significantly higher in Group 2 than Group 1 and in Group 3 compared with Group 1. Comparing Group 2 and Group 3, there was no significant difference regarding clinical pregnancy rates.
conclusionIt is preferable to allow an interval between oocyte retrieval and sperm injection.
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Registered trials
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