Benefits of Elective Single Embryo Transfer (eSET):
1. Reduced Risk of Multiple Pregnancies: eSET lowers the risk of multiple pregnancies (e.g., twins or triplets), which are associated with higher maternal and fetal complications.
2. Higher Success Rates per Transfer: Focusing on transferring a single high-quality embryo can result in higher success rates per transfer compared to transferring multiple embryos.
3. Cost-Effectiveness: While the initial IVF cycle might be more expensive with eSET, the reduced likelihood of requiring additional cycles due to failed implantations or multiple pregnancies can make it more cost-effective in the long run.
4. Healthier Pregnancy Outcomes: There is evidence to suggest that singleton pregnancies are associated with better maternal and fetal outcomes compared to multiple pregnancies.

Risks of Elective Single Embryo Transfer (eSET):
1. Lower Probability of Pregnancy: One of the main risks is that not all embryos will implant successfully, so there is a chance of not achieving a successful pregnancy in the initial cycle.
2. Potential Need for Additional Cycles: If the first eSET cycle is unsuccessful, patients may need to undergo additional cycles, leading to increased emotional stress, time commitment, and financial burden.
3. Risk of Implantation Failure: Some embryos may not implant even if they are of good quality, resulting in a failed cycle.

Determining Suitability for eSET:
1. **Age of the