Fertility Glossary

Asthenozoospermia

Reduced sperm movement.

Asthenozoospermia may be caused by infection, varicocele, antisperm antibodies, prolonged abstinence or sample handling problems. ICSI can overcome poor movement during treatment.

Related terms

Motility

The proportion of sperm that are moving.

Antisperm antibodies

Immune proteins that stick to sperm and impair movement.

ICSI

A single sperm is injected directly into an egg during IVF.

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