Pronuclear morphology evaluation in in vitro fertilization (IVF) / intracytoplasmic sperm injection (ICSI) cycles: A retrospective clinical review

Alessia Nicoli, Francesco Capodanno, Ilaria Rondini, Barbara Valli, Maria Teresa Villani, Daria Morini, Leonardo De Pascalis, Stefano Palomba, Giovanni Battista La Sala

Research output: Contribution to journalArticle

Abstract

Background: The assessment of the embryo quality is crucial to maintain an high pregnancy rate and to reduce the risk of multiple pregnancy. The evaluation of the pronuclear and nucleolar characteristics of human zygote have been proposed as an indicator of embryo development and chromosomal complement. The aim of the current study was to assess the role of pronuclear morphology evaluation in vitro fertilization (IVF) / intracytoplasmic sperm injection (ICSI) cycles. Methods. Retrospective clinical analysis on 755 non-elective transfers of only one embryo (ET). Embryo assessment was performed in days 1 and 2. Clinical and biological data were recorded and analyzed according to embryo and/or pronuclear morphology. Results: Both pronuclear and embryo morphology were significantly related to clinical pregnancy and live-birth rates. No significant difference in clinical pregnancy and live-birth rates was detected when the pronuclear and embryo morphology assessments were combined. Embryo morphology and maternal age were the only independent predictors of favorable outcome by logistic regression analysis. Conclusions: Pronuclear evaluation is effective to select the best zygotes if ET is performed at day 1, whereas it did not improve the clinical outcomes when combined with embryo morphology evaluation in day 2.

Original languageEnglish
Article number1
JournalJournal of Ovarian Research
Volume6
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • Embryo morphology
  • ICSI
  • IVF
  • Live-birth
  • Pregnancy
  • Pronuclear morphology

ASJC Scopus subject areas

  • Oncology
  • Obstetrics and Gynaecology

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    Nicoli, A., Capodanno, F., Rondini, I., Valli, B., Villani, M. T., Morini, D., De Pascalis, L., Palomba, S., & La Sala, G. B. (2013). Pronuclear morphology evaluation in in vitro fertilization (IVF) / intracytoplasmic sperm injection (ICSI) cycles: A retrospective clinical review. Journal of Ovarian Research, 6(1), [1]. https://doi.org/10.1186/1757-2215-6-1