Direct Warming Frozen Embryo Transfer Outcomes in Assisted Reproductive Technology

This clinical trial explores a novel direct warming method for frozen embryo transfer (FET), aimed at improving both clinical and operational outcomes in assisted reproductive technologies (ART). The method was designed to simplify and accelerate the embryo thawing process, reducing the time needed for thawing while eliminating the use of cryoprotectants commonly required in conventional thawing methods. This innovation has the potential to offer a more efficient and cost-effective alternative to standard FET procedures. The primary focus of this trial is to compare the clinical effectiveness of the direct warming method against the conventional multi-step thawing process. In particular, the study seeks to determine whether the new method yields comparable or superior outcomes in terms of clinical pregnancy rate (CPR), ongoing pregnancy rate (OPR), and live birth rate (LBR), while also assessing its overall cost-effectiveness. Study Design and Technical Details This study employs a randomized controlled design, with participants being allocated into either the intervention group (direct warming method) or the control group (conventional multi-step thawing). The direct warming method streamlines the thawing process to just 3 minutes, in contrast to the conventional method, which requires multiple stages and takes approximately 20 minutes. By using only an embryo culture medium without cryoprotectants, the direct warming method reduces both complexity and potential risks associated with handling and cryoprotectant toxicity. Key Objectives * Primary Objective: To evaluate the clinical efficacy of the direct warming method in achieving comparable or higher success rates for FET as compared to conventional multi-step thawing. * Secondary Objective: To assess the cost-effectiveness of the direct warming method by comparing the consumable and time costs across different centers. Expected Impact and Innovation The direct warming method challenges the traditional multi-step thawing approach, offering a faster and simpler alternative without compromising clinical outcomes. By minimizing the need for cryoprotectants and reducing the complexity of the thawing process, the new method is expected to enhance the overall efficiency of FET procedures while maintaining or improving pregnancy success rates. Additionally, the cost and time savings associated with the direct warming method may make it a viable option for IVF clinics worldwide, driving standardization and consistency across clinical settings.