In cases of infertility, intracytoplasmic sperm injection (ICSI) can help achieve pregnancy, especially when male infertility is a factor. During this form of IVF, sperm is directly injected into the egg by a healthcare provider to assist with conception. Pregnancy can occur following the transfer of the embryo.
Intracytoplasmic sperm injection(ICSI) is a treatment for infertility where live sperm is injected into a person’s eggs in a lab. This process can result in an embryo. ICSI is a type of IVF, often used when male infertility impacts someone’s ability to conceive.
Intracytoplasmic means that the sperm injection happens inside the egg’s cytoplasm. This is the jelly-like substance at the center of an egg, made of water, salt, and other molecules.
ICSI is a type of IVF. In traditional IVF, thousands of sperm are placed near an egg in a dish, and fertilization happens by chance. But with ICSI, a single sperm is directly injected into a single egg, increasing the chance of fertilization. However, fertilization is not guaranteed.
In both ICSI and traditional IVF, the fertilized egg (embryo) is implanted into the uterus. Pregnancy occurs if the embryo attaches to the uterine lining.
Assisted reproductive technology (ART) includes both ICSI and IVF, which are used to help treat infertility. ART involves fertility treatments done in a lab using eggs and sperm to initiate pregnancy outside of the body.
Around 6 out of 10 IVF procedures involve ICSI. The chances of a successful pregnancy with ICSI are similar to those with traditional IVF. Typically, 50% to 80% of ICSI attempts result in fertilization.
ICSI is most beneficial for individuals experiencing male infertility. Your doctor may suggest ICSI if you have:
You might visit an Ob/Gyn who specializes in reproductive endocrinology. These doctors focus on diagnosing and treating conditions related to the endocrine system that affect reproduction, including infertility and fertility preservation.
Before ICSI, your healthcare provider needs to collect eggs and sperm.
Here’s what happens during egg retrieval:
The person providing the eggs receives injections of medication for eight to 14 days. This stimulates the ovaries to produce multiple mature eggs. Later, an injection of Lupron or human chorionic gonadotropin (hCG) helps with the final maturation of the eggs.
Using transvaginal ultrasound, your healthcare provider guides a thin needle through the vaginal wall into the ovaries. This is done with a mild anesthetic, so you won’t feel any pain. A suction device connected to the needle is used to collect the eggs.
If fresh sperm is being used, it’s collected on the same day as egg retrieval. Here’s how it’s done:
After ICSI, your healthcare provider monitors the fertilized egg in the laboratory to check for signs of successful fertilization. Typically, within five to six days, a healthy fertilized egg divides into cells, forming a blastocyst. Your healthcare provider evaluates the size and cell mass of the blastocyst to determine the optimal time for a potential pregnancy.
An embryo transfer usually occurs on the fifth or sixth day following the egg retrieval procedure. However, in some cases, the transfer may be delayed for months or even years. Your doctor will discuss the timing of the embryo transfer with you. Using ultrasound technology, your healthcare provider inserts a long, thin tube called a catheter into your vagina and injects the embryo into your uterus. For pregnancy to occur, the embryo needs to attach to the uterine wall. Your healthcare provider may advise waiting at least two weeks before taking a pregnancy test.
Compared to traditional IVF, ICSI appears to be more successful in helping individuals with male infertility become parents. Some centers use ICSI for all patients, regardless of infertility diagnosis.
These complications may occur with ICSI:
In the United States, approximately 2% of babies are born with congenital conditions. An additional 1% of children conceived with ICSI have congenital conditions. Medical experts believe that the underlying cause of infertility may contribute to these issues rather than the fertility treatment itself. Additionally, this risk is relatively low considering that birth defects occur in 2% of newborns every year.
To improve the chances of a successful pregnancy, your healthcare provider might utilize ICSI to fertilize multiple eggs. If you opt to transfer more than one embryo, you may end up carrying twins, triplets, or even more babies. A multiple pregnancy can heighten the risk of premature birth and other complications for both the parent giving birth and the babies.
If you or your partner are facing challenges in conceiving, your healthcare provider might suggest intracytoplasmic sperm injection (ICSI). This form of in vitro fertilization (IVF) is particularly beneficial when male infertility is a concern. ICSI includes several steps: stimulating and retrieving eggs, collecting sperm, creating embryos in a lab, and eventually transferring embryos. Have a discussion with your healthcare provider to determine if ICSI is the suitable fertility treatment for you.