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Rosas IM, Anagnostopoulou C, Singh N, Gugnani N, Singh K, Desai D, Darbandi M, Manoharan M, Darbandi S, Chockalingam A, Leonardi Diaz SI, Gupta S, Kuroda S, Finelli R, Sallam HN, Wirka KA, Boitrelle F, Agarwal A. Optimizing embryological aspects of oocyte retrieval, oocyte denudation, and embryo loading for transfer: a state of the art review. Panminerva Med 2022; 64:156-170. [PMID: 35146991 DOI: 10.23736/s0031-0808.22.04675-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Oocyte retrieval, oocyte denudation, and embryo transfer are crucial processes during assisted reproduction (ART). Air quality in the ART laboratory, temperature, pH of the media used and the time interval between oocyte retrieval and insemination are all critical factors. Anesthesia is required for oocyte retrieval, however evidence regarding the potential impact of different methods (general anesthesia, conscious sedation, and local anesthesia) on the clinical outcomes is unclear. The optimal timing of oocyte denudation following retrieval has not been established. Regarding the mechanical denudation process, there is a lack of evidence to demonstrate the safest minimum inner diameter of denuding pipettes used to complete the removal of granulosa cells surrounding the oocytes. During embryo transfer, many clinics worldwide flush the catheter before embryo loading, in an attempt to potentially rinse off any toxic agents; however, there is insufficient evidence to show that flushing the embryo transfer catheter before loading increases the success of ART outcome. Considering the serious gaps in knowledge in ART practice, the aim of this review is to provide an updated overview of the current knowledge regarding the various steps and techniques involved in oocyte retrieval, oocyte denudation, and embryo loading for transfer.
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Affiliation(s)
- Israel M Rosas
- Citmer Reproductive Medicine, IVF LAB, Mexico City, Mexico
| | | | | | - Nivita Gugnani
- BabySoon Fertility and IVF Center, India Institute of Medical Sciences, New Delhi, India
| | - Keerti Singh
- Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Barbados
| | - Dimple Desai
- DPU IVF & ENDOSCOPY CENTER, Dr. D. Y. Patil Hospital & Research Centre, Pune, India
| | - Masha Darbandi
- Fetal Health Research Center, Hope Generation Foundation, Tehran, Iran.,Gene Therapy and Regenerative Medicine Research Center, Hope Generation Foundation, Tehran, Iran
| | | | - Sara Darbandi
- Fetal Health Research Center, Hope Generation Foundation, Tehran, Iran.,Gene Therapy and Regenerative Medicine Research Center, Hope Generation Foundation, Tehran, Iran
| | | | | | - Sajal Gupta
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | | | - Renata Finelli
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Hassan N Sallam
- Department of Obstetrics and Gynaecology, Alexandria University Faculty of Medicine, Alexandria, Egypt
| | - Kelly A Wirka
- Fertility & Endocrinology, Medical Affairs, EMD Serono, USA
| | - Florence Boitrelle
- Reproductive Biology, Fertility Preservation, Andrology, CECOS, Poissy Hospital, Poissy, France.,Department of Biology, Reproduction, Epigenetics, Environment and Development, Paris Saclay University, UVSQ, INRAE, BREED, Jouy-en-Josas, France
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland, OH, USA -
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