Although in the current study the choice was made not to use the sperm concentration in the ROC curve analysis due to a possible bias in the selection of the subfertile population , this does not influence the results found among the current fertile population. It is possible that the damage to epididymis and spermatozoa in cases of obstructive infertility are due to the development of a local autoimmune reaction to spermatozoal antigens. A complete collection of the semen is fundamental for a correct analysis. The extent and nature of agglutination should be judged with the following graduation: It gives a large area for the scanning and direct assessment of sperm surface abnormalities from the video screen at different higher magnifications. Semen analysis is also performed post vasectomy to determine if a patient has become sterile. While a few white blood cells in the semen is normal, many pus cells suggest the presence of seminal infection.
The Chi square test was used for statistical analysis with Yates modification wherever applicable. Although sperm morphology evaluated by strict criteria showed the smallest AUC Several factors can affect the sperm count and other semen analysis values. Sperm factor has also been cited as an important reason for low pregnancy rates even after a successful vasoepididymal anastomosis to bypass obstruction. Some of the common causes of male infertility are extremely high fever, failure of the testicles, obstruction of the tubes that carry semen to the penis, and a less than normal amount of sperm in the sample.
However, it is for the normal oval form that sperm measurements are of the utmost importance. The increased sperm head length results from an abnormally elongated nucleus that also presents particular membranous layers between the outer and inner leaves of the nuclear envelope. Methodological aspects of sperm morphology evaluation: The tail can be either straight or bent. While it may appear to be more reliable because the test has been done "objectively" by a computer , there are still many controversies about its real value, since many of the technical details have not been standardized, and vary from lab to lab. On the other hand, to classify spermatozoa as too large, too small or tapering, one need to make use of sperm measurements to ensure that these spermatozoa are classified in the correct category. Posted by Kelly Schorsch on January 3,
Semen quality and human fertility: A preliminary behavioral and brain imaging study. The supernatant of the centrifuged epididymal fluid was studied for analysis of antisperm antibody by ELISA and the sediment was used for study of sperm morphology along with smears of epididymal fluid by light and scanning electron microscope. Sperm morphology may be a more sensitive tool to measure reproductive health and testicular stress, as illustrated n this review. It is quite common for fertile men to have a low percentage of ideally shaped sperm; however when the proportion of ideally shaped sperm has significantly reduced the chance of being fertile is lower. The strongest criticism, however, came from Eliasson as recently as and