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Castillo J, Kol S. Ideal frozen embryo transfer regime. Curr Opin Obstet Gynecol 2024; 36:148-154. [PMID: 38295043 DOI: 10.1097/gco.0000000000000943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
PURPOSE OF REVIEW This review aims to compare evidence on four criteria (embryo implantation, obstetric outcomes, patient convenience, and IVF-unit efficiency) by analyzing published research on different endometrial preparation methods for frozen embryo transfer (FET). RECENT FINDINGS While the artificial-FET cycle provides advantages in scheduling and implantation, it falls short in ensuring optimal obstetric outcomes. In contrast, natural-FET ensures embryo implantation conditions if ovulation is correctly identified. Supplementing with exogenous progesterone shields against low corpus luteum progesterone secretion, crucial for positive obstetric outcomes. In mNC-FET, ovulation is hCG-triggered, closely resembling natural cycles and reducing monitoring visits for enhanced patient convenience.Letrozole is a recommended option for anovulatory patients, preserving endometrial thickness. It is cost-effective, less likely to induce multifollicular development than gonadotropins, and better tolerated.In a novel approach, the natural-proliferative-phase-FET initiates progesterone in an unmediated ovulatory cycle at 7 mm endometrial thickness, combining the benefits of a natural proliferative endometrium with the convenience of scheduled artificial cycles. SUMMARY The artificial cycle offers scheduling advantages, but may compromise obstetric outcomes. Natural FET relies on accurate ovulation timing for successful implantation. mNC-FET simplifies the process using hCG induction, minimizing clinic visits for improved convenience. Letrozole is highlighted as a cost-effective and well tolerated option in anovulatory patients. A recent innovative approach combines elements of natural and artificial cycles, showing promise for FET procedures.
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Affiliation(s)
- Juan Castillo
- Department of Reproductive Medicine, Instituto Bernabeu, Alicante, Spain
| | - Shahar Kol
- IVF Unit, Elisha Hospital, Haifa, Israel
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Zaha IA, Huniadi A, Bodog F, Seles L, Toma MC, Maghiar L, Szulay-Bimbo E, Bodog A, Sachelarie L, Florea M, Stefan L. Autologous Platelet-Rich Plasma (PRP) in Infertility-Infusion versus Injectable PRP. J Pers Med 2023; 13:1676. [PMID: 38138903 PMCID: PMC10744642 DOI: 10.3390/jpm13121676] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: During IVF (in vitro fertilization) procedures, endometrial thickness has a significant role in the success of pregnancy outcomes for embryo transfers. Endometrial thickness, a crucial component of endometrial receptivity, is a contentious issue. The regenerative properties of PRP have been shown in recent research to have positive effects on the endometrium. PRP increases the pregnancy rate in IVF patients with thin endometrium and recurrent implantation failure. In order to demonstrate the efficacy of PRP therapies, this work compares the administration of injectable and infusible PRP during endometrial preparation. (2) Methods: This prospective single-arm control study was conducted at an IVF center in Oradea, Romania. This study included 50 patients; 27 were included in the group with Injectable PRP and 23 in the group with Infusible PRP. The outcome was compared between the two groups, with the primary outcome being the endometrial thickness after the PRP infusion or injection and the secondary outcome being the pregnancy rate in both groups. (3) Results: Patients who were treated with Injectable PRP had a higher pregnancy rate. An improvement in the quality of the endometrium, in terms of thickness, was also observed in the patients who were injected with PRP. (4) Conclusions: Compared to PRP infusions inside the uterus, sub-endometrial PRP injections in frozen embryo transfer methods have a greater pregnancy rate.
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Affiliation(s)
- Ioana Alexandra Zaha
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- A Calla—Infertility Diagnostic and Treatment Center, Constantin A. Rosetti Street, 410103 Oradea, Romania;
- Pelican Clinical Hospital, Corneliu Coposu Street 2, 410450 Oradea, Romania
| | - Anca Huniadi
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- A Calla—Infertility Diagnostic and Treatment Center, Constantin A. Rosetti Street, 410103 Oradea, Romania;
- Pelican Clinical Hospital, Corneliu Coposu Street 2, 410450 Oradea, Romania
| | - Florin Bodog
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- Oradea County Hospital, Gheorghe Doja Street 65-67, 410169 Oradea, Romania
| | - Luana Seles
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
| | - Mihaela Cristina Toma
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
| | - Laura Maghiar
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
| | - Erika Szulay-Bimbo
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- Pelican Clinical Hospital, Corneliu Coposu Street 2, 410450 Oradea, Romania
| | - Alin Bodog
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- Pelican Clinical Hospital, Corneliu Coposu Street 2, 410450 Oradea, Romania
| | - Liliana Sachelarie
- Department of Prelinical Discipline, Apollonia University, 700511 Iasi, Romania
| | - Mihai Florea
- A Calla—Infertility Diagnostic and Treatment Center, Constantin A. Rosetti Street, 410103 Oradea, Romania;
- Oradea County Hospital, Gheorghe Doja Street 65-67, 410169 Oradea, Romania
| | - Liana Stefan
- Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square 10, 410073 Oradea, Romania; (I.A.Z.); (A.H.); (F.B.); (L.S.); (M.C.T.); (L.M.); (E.S.-B.); (L.S.)
- A Calla—Infertility Diagnostic and Treatment Center, Constantin A. Rosetti Street, 410103 Oradea, Romania;
- Oradea County Hospital, Gheorghe Doja Street 65-67, 410169 Oradea, Romania
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