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Sperm morphology and fertility

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This measures many features of the sperm and semen the fluid in which the sperm are contained. The most important of these are the number of sperm sperm count , motility of the sperm percentage of moving sperm , morphology of the sperm percentage of normally shaped sperm , and the volume of fluid. To assess sperm morphology, the sperm are examined under a microscope and the percentage of abnormally shaped sperm is estimated. Sperm morphology is assessed using one of 2 sets of characteristics. Kruger criteria are strict and consider minute irregularities as abnormal. World Health Organization WHO criteria are more lenient and do not classify as many sperm as abnormal.
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Sperm Morphology (Shape): Does It Affect Fertility?

Sperm morphology and fertility
Sperm morphology and fertility
Sperm morphology and fertility
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Sperm morphology: Tests and results

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How Does Sperm Morphology Affect Fertility?

Sperm morphology — the size and shape of sperm — is one factor that's examined as part of a semen analysis to evaluate male infertility. Sperm morphology results are reported as the percentage of sperm that appear normal when semen is viewed under a microscope. Normal sperm have an oval head with a long tail. Abnormal sperm have head or tail defects — such as a large or misshapen head or a crooked or double tail. These defects might affect the ability of the sperm to reach and penetrate an egg.
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Patient charts were reviewed with men contacted and administered an Institutional Review Board IRB -approved telephone questionnaire to ascertain outcomes. After a median follow-up time of 2. Strict morphology should not be used to predict fertilization, pregnancy, or live birth potential. Semen analysis is a critical tool in the assessment of the infertile male; however, the importance of sperm shape, or morphology, is controversial.
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