ICSI is a highly advanced fertility treatment where a single sperm is selected and injected directly into the center of an egg to facilitate fertilization. With the conventional IVF method, thousands of sperm are placed together with the egg, hoping that one of the sperm will penetrate the egg naturally for successful fertilization.
ICSI does not leave this process of fertilization to chance. It bypasses potential barriers like low sperm count, poor motility, or unknown sperm abnormalities to increase the chance that fertilization occurs. This method is especially helpful in cases where male infertility is a significant concern or when previous IVF attempts have not been successful. However, it may be used routinely in most cases to improve overall outcomes.
The ICSI process is integrated into an IVF cycle, enhancing the chances of successful fertilization. The following steps are involved in the ICSI process.
- A sperm sample is collected.
- An embryologist then studies the sample under a high-powered microscope to identify and select a healthy sperm for injection.
- The selected sperm is then injected directly into the center of each egg using a fine needle.
- After the injection, the eggs are monitored in the lab to confirm successful fertilization.
- Once fertilized, the resulting embryos are observed for development before being transferred to the uterus.
ICSI is also often used when frozen sperm or eggs are used for IVF since it can ensure precise fertilization.