IVF treatment continues to be a beacon of hope for thousands of couples dreaming of parenthood. However, the success rate of this complex process is shaped by a combination of many different factors. Just as every couple's story is unique, responses to treatment and the results obtained are highly individualized. As Prof. Dr. Kubilay Vicdan, with over 30 years of experience, we strive to offer our couples the highest IVF success rates at Ankara IVF Center. So, what are the 10 most significant factors influencing IVF success rates?
Age and Ovarian Reserve
1. Female Age
Female age is one of the most critical factors affecting IVF success. Women are born with a finite ovarian reserve, and as they age, this reserve declines in both quantity and quality. A significant decrease in egg quality begins especially after the age of 35, and success rates drop considerably after 40. The likelihood of healthier genetic structures in eggs obtained at a younger age directly increases embryo quality and, consequently, the chances of pregnancy.
2. Ovarian Reserve and Egg Quality
Ovarian reserve refers to the number of viable eggs remaining in a woman's ovaries. It is determined by tests such as AMH (Anti-Müllerian Hormone) levels, FSH (Follicle-Stimulating Hormone) levels, and antral follicle count. Having a sufficient and good quality ovarian reserve ensures the retrieval of more numerous and higher-quality eggs after stimulation. This provides more options for embryo development and positively impacts IVF success rates. For women with low ovarian reserve or those in an advanced age group, options like egg freezing can be considered to preserve their future chances of pregnancy.
Embryo Quality and Laboratory
3. Embryo Quality
The quality of embryos developing after fertilization directly determines the outcome of IVF treatment. Embryo quality is assessed by embryologists based on morphological characteristics such as cell number, cell symmetry, fragmentation rate, and developmental speed. Embryos of the highest quality have a greater chance of implantation in the uterus and establishing a healthy pregnancy. Both egg and sperm quality are crucial for obtaining high-quality embryos.
4. Laboratory Technology and Embryologist Experience
The heart of IVF treatment is the embryology laboratory. The technological infrastructure of the laboratory, air quality, stability of incubators, and the quality of culture media used are vital for embryo development. Another factor just as important is the experience and expertise of the embryologist team. Experienced embryologists perform the most delicate procedures at every stage, from egg retrieval to embryo transfer, accurately evaluate embryos, and ensure all necessary conditions for optimal development. The application of advanced techniques like Intracytoplasmic Sperm Injection (ICSI) is also part of this expertise.
5. Genetic Screening (PGT)
Especially in couples with advanced maternal age, recurrent pregnancy losses, or previous unsuccessful IVF attempts, genetic screening of embryos (PGT - Preimplantation Genetic Testing) before transfer to the uterus may be recommended. PGT allows for the selection of genetically healthy embryos, thereby increasing the chances of pregnancy, reducing the risk of miscarriage, and minimizing the risk of having a baby with a genetic disorder. This method helps increase IVF success rates by performing healthy embryo transfers through genetic diagnosis.
Uterine Health
6. Endometrial Thickness and Structure
The uterine lining (endometrium) must have an appropriate thickness and structure for the embryo to implant. Ideally, during embryo transfer, the endometrium is expected to have a certain thickness (usually 8 mm or more) and a trilaminar appearance. Endometrial thinness, adhesions, or other structural abnormalities can reduce the embryo's chances of implantation.
7. Uterine Anomalies and Other Gynecological Conditions
Conditions such as congenital structural abnormalities in the uterus (septum, bicornuate uterus, etc.), fibroids, polyps, intrauterine adhesions (Asherman's syndrome), or hydrosalpinx (fluid accumulation in the fallopian tubes) can prevent embryo implantation or negatively affect the continuation of pregnancy. Treating such conditions with surgical methods like laparoscopy or hysteroscopy is vital for the success of IVF treatment.
Lifestyle Factors
8. Nutrition and Weight Management
A healthy and balanced diet supports reproductive health for both women and men. Excess weight (obesity) or being underweight can disrupt hormone balance, negatively affecting egg and sperm quality. Having an ideal