When IVF Gets Complicated: Recurrent Implantation Failure, PGT, and Complex Cases
For some women and couples, achieving pregnancy may require more than one attempt. When several assisted reproduction cycles do not lead to the expected outcome or when recurrent pregnancy losses occur, the situation may involve greater complexity, and it is entirely understandable that this can be frustrating.
At IVI, approximately 15–20% of our patients seek consultation due to previous implantation failures. In these situations, a more detailed evaluation may help to understand the possible causes and to assess treatment options tailored to each patient.
Advances in reproductive medicine have made it possible to develop more precise diagnostic tools and personalized strategies that can improve the understanding of these cases.
What is Recurrent Implantation Failure?
Recurrent implantation failure (RIF) refers to difficulty in achieving pregnancy after embryos have been transferred to the uterus, even when favorable characteristics are present. In medical terms, it may be considered when pregnancy is not achieved after the transfer of several embryos or blastocysts – embryos at an advanced stage of development, approximately 5 or 6 days after fertilization of the egg.
Dr Jakob Doblinger, IVI Valencia
“Implantation is a complex process in which the embryo must attach to the endometrium in order to initiate pregnancy. When this does not occur repeatedly, specific investigations may be required to assess the possible contributing factors,” explains Dr Jakob Doblinger, gynecologist at IVI Valencia.
A small percentage of women undergoing assisted reproduction treatment may experience this situation, even after the transfer of good-quality embryos.
What May be the Causes?
Implantation failure may be related to various factors, both embryonic and maternal. Possible causes include:
- Uterine abnormalities, such as fibroids or structural anomalies
- Hormonal or metabolic factors
- Immunological aspects, such as thrombophilia
- Impaired endometrial receptivity
- Genetic alterations in the embryo
In some cases, factors related to blood coagulation or other specific medical conditions may also play a role.
Identifying the underlying cause is a key step in defining the most appropriate approach.
The Importance of a Personalized Diagnosis
When repeated cycles are unsuccessful, when complex fertility challenges are present, or when there are genetic risks, specialists may recommend a comprehensive evaluation that includes different tests, such as:
- Advanced ultrasound scans and uterine assessments
- Hormonal and genetic analyses
- Endometrial receptivity testing
- Evaluation of possible immunological factors
This approach allows each case to be assessed individually and treatment to be guided according to the specific needs of each patient.
The Role of Preimplantation Genetic Testing (PGT)
Preimplantation genetic testing (PGT) is a technique that enables embryos to be analyzed before transfer to the uterus. This assessment helps to detect possible chromosomal or genetic alterations that could affect the development of pregnancy.
Dr Jakob Doblinger, IVI Valencia
“This information may be particularly useful in patients who have experienced previous implantation failures, recurrent miscarriages, or who present known genetic factors,” states Dr Jakob Doblinger, gynecologist at IVI Valencia.
The objective is to obtain additional information to help select embryos with characteristics compatible with normal pregnancy development, always within a personalized medical approach.”
Treatment Options in Complex Cases
Depending on the identified cause, specialists may recommend different options, such as:
- Specific medical treatments for hormonal or immunological factors
- Surgical procedures to correct uterine abnormalities
- Use of advanced embryo selection techniques
- Personalized treatments based on the individual diagnosis
Each case is different, and the treatment plan is therefore adapted to the characteristics and needs of each patient.
A Multidisciplinary and Personalized Approach
The management of complex cases requires collaboration among different specialists, such as gynecologists, embryologists, and experts in reproductive genetics. This multidisciplinary approach makes it possible to evaluate all factors that may influence the reproductive process and to provide comprehensive care.
In addition to medical treatment, guidance and clear information are essential in helping patients make informed decisions.
Spain as a Destination for International Patients with Complex Cases
Spain is a leading country in assisted reproduction, particularly for international patients, including many patients from the UK and Ireland. The experience of medical teams, access to advanced technology, and the possibility of carrying out personalized studies lead many patients to choose specialized centers for this type of treatment. In addition, IVI offers online consultations to avoid unnecessary travel and coordinates with physicians in the patient’s country of origin to ensure appropriate monitoring throughout the process.
Conclusion: Understanding the Problem is the First Step
Experiencing repeated implantation failures or pregnancy losses can be a difficult situation. However, today there are diagnostic tools and treatment options that allow each case to be studied with greater precision.
Consulting with a specialized assisted reproduction team can help to clarify the possible causes and to assess the available options, always within a personalized approach tailored to each patient.
About the Author
Dr Jakob Pasquale Doblinger is a specialist in Gynecology and Obstetrics with international experience in reproductive medicine. He studied Human Medicine at the Medical University of Innsbruck and completed his clinical training at Paracelsus Medical University Salzburg, where he worked as an intern physician, resident physician and later as a specialist in Gynecology and Obstetrics.
He also gained specialist experience at IVIRMA Valencia in Spain, one of Europe’s well-known fertility clinic groups, where his work focuses on reproductive medicine and IVF treatment.
Dr Doblinger’s academic and clinical interests include fertility treatment, IVF, hormonal support in assisted reproduction, ovarian stimulation, recurrent or complex fertility cases, and the prevention and management of ovarian hyperstimulation syndrome (OHSS). His scientific work includes research on progesterone support in IVF, ovulation induction in women with polycystic ovary syndrome (PCOS), and OHSS — topics that are highly relevant for patients undergoing fertility treatment.
He has co-authored scientific publications in reproductive medicine, including work on subcutaneous progesterone for luteal phase support in IVF, letrozole for ovulation induction in PCOS, and a textbook chapter on OHSS. Through his clinical and academic background, Dr Doblinger brings both medical expertise and a strong understanding of the challenges patients may face during fertility treatment.
