Special Laboratory Techniques

ICSI

Introduction to ICSI:
This technique was developed in Brussels, Belgium at the Center for Reproductive Medicine in 1991. ICSI involves the injection of a single sperm directly into the cytoplasm of the oocyte (egg) using a technique called micromanipulation. This technique has revolutionized the treatment of male infertility. It is useful to treat sperm that has: low count, low motility, high anti-sperm antibodies or abnormal morphology. In the case of testicular obstruction (ie: vasectomy), the fragile sperm are aspirated from the testes by the urologist (in our office) and then the ICSI procedure is performed by the embryologist to fertilize the oocytes.

In 1994 the Cooper Center for IVF was credited with the first ICSI pregnancy in the Delaware Valley and they were triplets! Currently, approximately 40% of all egg retrievals performed at the Cooper Center for IVF utilize the ICSI technique. Careful follow up of all pregnancies are done and to date the rate of birth defects appears to be no higher than in naturally conceived children. It has been noted that for men that have extremely low sperm counts they may have a condition known as micro-deletion of the y-chromosome. This is a genetic condition that can account for why these men have a very low sperm count. This condition (micro-deletion of the y-chromosome) can be genetically passed down to the male offspring of this specific group of men. It has been shown that men with a condition called congenital absence of the vas deferens have a higher incidence of carrying the gene for cystic fibrosis. Prior to therapy, the couple should have genetic testing done for cystic fibrosis.

Candidates for ICSI:
ICSI is useful for patients suffering from male factor infertility, which includes low count, low motility, abnormal sperm, high anti-sperm antibodies, or poor fertilization by conventional insemination in past cycles. ICSI requires very few total motile sperm, so even males with severe male factor infertility have a chance at producing a genetically related child. If there is an obstruction in the sperm ducts, a successful pregnancy can be achieved by collecting the fragile sperm from within the sperm duct behind the obstruction or from a testicular biopsy. Aspiration of the sperm from the testes is usually performed at the Cooper Center for IVF the same day as the eggs are retrieved.

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