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Related Experiment Videos

Hyperspermia: the forgotten condition?

S Cooke1, J P Tyler, G L Driscoll

  • 1Integrated Fertility Services, Westmead, NSW, Australia.

Human Reproduction (Oxford, England)
|February 1, 1995
PubMed
Summary
This summary is machine-generated.

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Hyperspermia, defined as a seminal volume exceeding 6.3 ml, was observed in 4223 men. Nearly half of these men had sperm concentrations below the accepted normal value, highlighting the need for comprehensive semen analysis.

Area of Science:

  • Reproductive Medicine
  • Andrology
  • Urology

Background:

  • Defining hyperspermia is crucial for male fertility assessments.
  • Previous studies have not clearly established a minimum threshold for hyperspermia.

Purpose of the Study:

  • To establish a minimum volume threshold for hyperspermia based on a large cohort.
  • To investigate the prevalence of low sperm concentration in men with hyperspermia.

Main Methods:

  • Analysis of seminal fluid data from 4223 men with documented abstinence periods.
  • Calculation of the 95th percentile for seminal volume to define hyperspermia.
  • Assessment of sperm concentration in men meeting the hyperspermia criteria.

Main Results:

Related Experiment Videos

  • The 95th percentile for seminal volume was determined to be 6.3 ml.
  • Among men with seminal volume ≥ 6.3 ml (n=229), 49.3% had sperm concentrations below 20 x 10^6/ml.
  • This suggests a potential association between hyperspermia and reduced sperm concentration.

Conclusions:

  • A seminal volume of 6.3 ml can be considered a minimum threshold for hyperspermia.
  • A significant proportion of men with hyperspermia exhibit subnormal sperm concentrations.
  • Comprehensive semen analysis, including volume and concentration, is essential for evaluating male infertility.