Asthenospermia
Pronunciation: as-THEE-no-sper-mee-ah
Reduced sperm motility characterized by decreased percentage of progressively motile sperm in semen analysis.
Full Definition
Asthenospermia is defined as reduced sperm motility, specifically when progressive motility falls below 32% or total motility below 40% according to WHO reference values. Sperm motility is categorized as progressive, non-progressive, or immotile based on movement patterns. Causes include genetic defects, infections, varicocele, oxidative stress, or environmental factors. Poor sperm motility significantly impacts natural conception and may require assisted reproductive techniques such as IUI or IVF with ICSI depending on severity.
Usage
Usage note: One of three primary male factor abnormalities; often occurs with other sperm parameter defects.
In Context
- "Severe asthenospermia was diagnosed with only 15% progressive motility observed in the semen sample." — Andrology laboratory report
- "Treatment options for asthenospermia include antioxidant therapy and assisted reproductive techniques." — Patient counseling documentation