Keywords
Infertility; In Vitro Fertilization; ICSI; Comparison; Pregnancy success rate
1. Introduction
Infertility, a condition marked by the inability to conceive after one year of regular, unprotected intercourse, presents
significant challenges for affected couples. Infertility is divided into two types: primary and secondary, with various
causal factors from the male, female, or a combination of both. In women, disorders can occur in the vagina, cervix,
uterus, fallopian tubes, ovaries, or the ovulation process. Meanwhile, in men, problems are often related to coitus,
ejaculation, and sperm quality. Othe r factors such as age, lifestyle, and stress also contribute to infertility (Novrika,
2015). Based on data from the Central Statistics Agency (BPS) in 2021, there are 39.6 million fertile couples in Indonesia,
with 10 -15% of them having difficulty having children. The main causes of infertility include sperm factors (35%),
ovulation disorders (20%), fallopian tube occlusion (20%), endometriosis (20%), and idiopathic factors (10%).
Infertility is a global health problem, including in Indonesia, although it is not life-threatening or affects physical activity.
However, for many couples, infertility has a major impact on family life, economy, and psychology (Hestiantoro et al.,
2013). WHO estimates that 8-10% of couples worldwide experience infertility, equivalent to 50 -80 million couples or
around two million new cases each year. Data from the 2013 Riskesdas showed that the prevalence of infertile couples
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in Indonesia reached 15-25%. In addition, the National Survey of Family Growth (NSFG) survey in the US revealed an
increase in infertile women from 8.4% in 1982 to 10.2% in 1995, and is predicted to reach 7.7 million in 2025 (Chandra
et al., 2013).
IVF (In Vitro Fertilization) is one method of treating infertility with a success rate of 40-50% (Wulaningsih, 2021). One
of the IVF techniques, ICSI (Intracytoplasmic Sperm Injection), has shown high success with the procedure of injecting
sperm directly into the oocyte for fertilization, especially in cases of low sperm quality (Aurel et al., 2023). Some experts
even suggest that ICSI be used routinely to prevent fertilization failure, although the risks need to be considered
together with the cost of the procedure (ASRM, 2020). A 2014 study showed that the ICSI success rate reached 44.6%
of 35,065 cases, while a 2023 study recorded a success rate of 59.5% of 377 couples (Palermo et al., 2014; Batha et al.,
2023). However, research in Indonesia is still minimal in comparing the success rate of ICSI between male and female
factors, so further studies are needed to update existing data
Literature reviews on Comparison of ICSI Pregnancy Success Rates in Male and Female Infertility Cases, is the first to
clearly compare these two factors and are still limited. Therefore, based on the reviewed studies on infertility, further
exploration of the ICSI method is necessary, particularly in Indonesia. This would allow for a comparison of ICSI success
rates between male and female infertility cases.
2. Review Content
2.1. Infertility
2.1.1. Definition of Infertility
Infertility is the inability to conceive, affecting both humans and animals, and occurs when a couple cannot achieve
pregnancy through sexual intercourse (Soleimani et al., 2023). In humans, infertility can result from various biological
factors but is treatable with medical technologies. Primary infertility refers to couples unable to conceive after a year of
unprotected intercourse, while secondary infertility applies to those who previously conceived but can no longer do so
under similar conditions (Vander Borght & Wyns, 2018).
2.1.2. Infertility in Male
The diagnostic process for male infertility typically involves a series of evaluations, including a comprehensive medical
history to assess reproductive health, semen analysis to examine sperm quality (count, motility, and morphology),
hormonal tests to me asure reproductive hormone levels, physical examinations and ultrasound to detect anatomical
abnormalities, ejaculatory function tests, sperm DNA integrity analysis, and testicular biopsies if necessary (Schlegel et
al., 2021). Risk factors for male infertility are categorized into three main groups: pre -testicular, testicular, and post -
testicular causes. Pre -testicular factors include hypothalamic and pituitary disorders, hormonal imbalances, and
congenital conditions affectin g spermatogenesis. Testicular factors involve issues such as varicocele, gonadotoxin
exposure, trauma, tumors, systemic diseases, and idiopathic conditions. Post -testicular factors include reproductive
tract obstructions, sperm motility disorders, and coit al dysfunctions like erectile issues or abnormal sexual activity
frequency. Additional risks include aging, obesity, alcohol consumption, smoking, exposure to environmental toxins,
excessive physical activity, prolonged use of laptops or mobile devices, and high stress levels, with individual variability
in contributing factors (Amelia & Rahmanisa, 2019; Gaziansyah & Janar Wulan, 2019).
2.1.3. Infertility in Female
The diagnostic process for female infertility involves various tests and procedures to identify the underlying causes.
These include a comprehensive medical history, physical examination to assess reproductive anatomy, and tracking
menstrual cycles to eval uate ovulation. Hormonal tests are performed to measure reproductive hormones, and pelvic
ultrasound (USG) is used to examine the ovaries, uterus, and fallopian tubes for structural issues like polycystic ovary
syndrome (PCOS), fibroids, or other abnormalities. Hysterosalpingography (HSG) checks for blockages in the fallopian
tubes, while laparoscopy can be used to examine and treat conditions like endometriosis. Ovulation function is also
tested using progesterone levels or ovulation monitoring tools. Comm on risk factors for female infertility include
ovulation disorders, PCOS, fallopian tube problems, uterine abnormalities, increasing age, body weight issues, stress,
reproductive infections, and sexually transmitted diseases, all of which can disrupt hormo nal balance, ovulation, or
reproductive tract function, making it more challenging to conceive.
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2.1.4. Infertility solution
Several treatment options for infertility in both men and women include medical care, assisted reproductive technology
(ART), donor sperm or egg, and reproductive surgery. Medical treatments may involve medications to regulate
menstrual cycles, stimulate o vulation, or balance hormones, especially for conditions like hormonal imbalances,
endometriosis, or polycystic ovary syndrome (PCOS). ART techniques, such as in vitro fertilization (IVF) or
intracytoplasmic sperm injection (ICSI), can help couples facing fertility issues by fertilizing eggs outside the body and
implanting the embryo in the uterus. Donor sperm or eggs may be considered if there are issues with sperm or egg
production. In some cases, surgery may be necessary to address physical conditions such as blocked fallopian tubes or
endometriosis.
2.2. In Vitro Fertilization (IVF)
The term "test tube baby" is more commonly used than "In Vitro Fertilization" (IVF), referring to the process where an
egg and sperm meet in a laboratory dish (not in the fallopian tube). This technique is typically used for women with
damaged or blocked fallopian tubes that cannot be repaired. In IVF, mature eggs are manually retrieved and fertilized
outside the body, and the resulting embryos are then implanted back into the uterus for further development. Although
"test tube baby" is widely recognized, IVF is the most popular assisted reproductive method, initially developed to treat
women with fallopian tube issues but now also used for various fertility problems, such as poor sperm quality, ovulation
disorders, endometriosis, and unexplained infertility (Aisiyah Anwar et al., 2022).
2.2.1. Success rates of In Vitro Fertilitation (IVF)
The success rate of IVF using the ICSI method is relatively high. According to a study on the "Relationship between
factors causing infertility and the success rate of IVF-ICSI at RSIA Putri Bunda Denpasar in 2017," the success rate of the
IVF-ICSI procedure was found to be 30.8%. The Majority of female patients undergoing the procedure were aged 35 or
younger, accounting for 69.2%, while the majority of male patients were aged 40 or younger, accounting for 82.1% (Ayu
et al., 2020).
2.3. Intracytoplasmic Sperm Injection (ICSI)
2.3.1. Definition of Intracytoplasmic Sperm Injection (ICSI)
ICSI (Intracytoplasmic Sperm Injection) is an advanced technique used in assisted reproductive technology (ART) to
address infertility. It involves directly injecting a single sperm into the cytoplasm of a mature egg using a specialized
pipette. The fertilized egg is then implanted into the uterus. This method aims to improve the chances of fertilization in
cases with sperm quality or quantity issues, and is typically recommended when there are sperm abnormalities, low
sperm count, or previous unsuccessful fertilization attempts with conventional IVF (Setiadi et al., 2012).
2.3.2. ICSI technique
ICSI is typically performed on couples facing fertilization issues, where the husband is unable to produce sperm suitable
for natural conception or IVF. The wife is given hormone induction to obtain mature eggs, which are retrieved about 36
hours after the administration of hCG (Mansour et al., 1994) . Prior to the ICSI procedure, the eggs are processed to
remove surrounding cumulus cells, and only eggs with the first polar body (PB -I) are selected. The sperm are chosen
using selection methods such as swim-up or side migration and then immobilized to facilitate the injection. While ICSI
has a high fertilization rate, fertilization failure or low fertilization rates can still occur, with total fertilization fai lure
reported at 1.29% and 3% according to (Liu et al., 1995). Selecting normal sperm for manipulation is a challenge, but
studies have shown that even immotile or dead sperm can still support the formation of male and female pronuclei after
being injected into the egg (Saili & Said, 2005).
2.3.3. Advantages of ICSI
ICSI is an effective solution for male infertility issues such as low sperm count, poor motility, abnormal morphology, or
other problems, as it involves directly injecting a selected sperm into the egg, bypassing natural fertilization barriers
(Eftekhar al., 2012). This technique increases the chances of successful fertilization by minimizing the risks associated
with abnormal sperm or sperm adhesion to the egg (Zheng et al., 2019). It also ensures better sperm selection, as only
the healthiest sperm is chosen for each egg, improving the chances of a healthy embryo development. ICSI is also
beneficial for women facing fertility issues like ovulation disorders or endometriosis, as it guarantees fertilization by
directly introducing sperm to the egg (Eftekhar et al., 2012). Furthermore, ICSI supports genetic selection techniques,
such as embryo screening or genetic disease detection, which can help couples with genetic conditions or high -risk
histories avoid passing on undesirable genetic traits to their offspring (Zheng et al., 2019).
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2.3.4. Disadvantages of ICSI
ICSI carries certain disadvantages, including higher costs compared to traditional IVF due to the complex
micromanipulation techniques and specialized equipment required for sperm injection into the egg (Sermondade et al.,
2013). Additionally, there is a risk of egg injury during the process, as the microneedle used to inject the sperm can
damage the egg, potentially affecting its ability to divide and develop properly (Wen et al., 2004). The direct selection
of sperm by embryologists also raises concerns about undetected genetic abnormalities, which could lead to the transfer
of embryos with genetic defects, increasing the risk of genetic disorders in the offspring (Li et al., 2006). Fur thermore,
some studies suggest that ICSI may be linked to a higher risk of reproductive disorders in children, although the risk
remains low, highlighting the importance of consulting a fertility specialist before undergoing the procedure
(Sermondade et al., 2013).
2.3.5. Success rate of ICSI
It is important to note that the success rate of IVF-ICSI varies, as the outcome of the procedure does not always remain
the same for every cycle and depends on individual factors. In 2014, a study on ICSI showed that out of 35,065 extreme
infertility case s, there were 15,646 cases (44.6%) of successful ICSI with positive βhCG indications (Palermo et al.,
2014). However, in Indonesia, the success rate of IVF-ICSI in 23 IVF centers reached only 13.88%, according to available
data (Ayu et al., 2020). A study conducted in 2023 on 377 couples found a success rate of 59.5% for ICSI. This research
demonstrated the success rate of ICSI in patients with infertility issues in both men and women (Batha et al., 2023).
2.3.6. Factors influencing the success of ICSI
Several factors can influence the success of Intracytoplasmic Sperm Injection (ICSI). First, the quality and quantity of
sperm play a crucial role, with sperm that has good motility, normal morphology, and sufficient quantity increasing the
chances of succ essful conception (Nadila & Pambudi, 2023). The quality of the oocytes is also important, as mature
oocytes with a healthy nucleus are more likely to be successfully fertilized . Additionally, the skill and experience of the
embryologist performing ICSI are critical in ensuring proper sperm injection and maximizing fertilization success. The
age of the woman can affect ICSI success, as older women generally have lower quality oocy tes, which can negatively
impact outcomes . Overall health conditions, such as endometriosis, polycystic ovary syndrome (PCOS), or hormonal
imbalances in women, and genetic or sperm abnormalities in men, can also affect ICSI success. Finally, the quality of the
embryo post-fertilization is crucial for successful implantation and the potential for a successful pregnancy (Nadila &
Pambudi, 2023).
3. Conclusion
This study confirms that ICSI success rates are higher in male infertility cases compared to female cases. Biological
factors, age, and gender significantly impact the success of ICSI procedures. These findings support ICSI as the preferred
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