Visit our website for Ingenes US Llama de E.U.A. y Canadá GO
Fecha de Publicación:
14 de octubre, 2012 

Asthenozoospermia

What is asthenozoospermia? Asthenozoospermia or asthenospermia is the decrease in the motility of the man's sperm. According to the World Health Organization, it is diagnosed when the number of motile sperm with displacement is lower than 50 percent or when the number of motile sperm in a straight line and a velocity of 25 µm/sec ...

Asthenozoospermia

What is asthenozoospermia?

Asthenozoospermia or asthenospermia is the decrease in the motility of the man's sperm.

According to the World Health Organization, it is diagnosed when the number of motile sperm with displacement is lower than 50 percent or when the number of motile sperm in a straight line and a velocity of 25 µm/sec (micrometers per second) is lower than 25 percent.

Asthenozoospermia is the most frequent seminal alteration and cause of infertility because it prevents the sperm from moving to the egg and penetrating it.

Causes of asthenozoospermia

Although the causes of asthenozoospermia are not known with accuracy, we know that  sperm motility can be affected by factors such as:

•    Teratozoospermia
•    Varicocele
•    Seminal infections
•    Testicular problems
•    Anti-spermatic antibodies
•    Poor diet
•    Smoking
•    Excessive alcohol consumption or other drugs, such as cocaine and marijuana
•    Exposure to toxic agents such as solvents or insecticides
•    Age (sperm motility decreases after the man reaches the age of 45)
•    Cancer treatment such as chemotherapy and radiation therapy
•    Fever episodes
•    Prolonged exposure to heat in automobiles, saunas or hot tubs

How is asthenozoospermia diagnosed?

Asthenozoospermia can be diagnosed through a simple semen analysis. It is recommendable that the man has not ejaculated for three to five days before the analysis, but no more than seven.

In order for fertilization to occur, the number of motile sperm with displacement should be greater than 50 percent and the number of motile sperm with a straight path and a velocity of 25 µm/sec should exceed 25 percent.

Treatments to achieve pregnancy when suffering from asthenozoospermia

Treatments to achieve pregnancy when suffering from asthenozoospermia include:

•    Intrauterine insemination, in which the man's previously capacitated sperm are inserted into the woman's uterus at the exact time of ovulation. Sperm with low motility are activated with sperm capacitation, which increases the probability that they will reach the egg and fertilize it. This method is used to facilitate fertilization in couples with moderate asthenozoospermia and is only recommended when the woman is younger than 35 years

•    In vitro fertilization, which joins the egg and the sperm in a laboratory plate, thus increasing the probability of fertilization

•    In vitro fertilization with intracytoplasmic sperm injection (FIV + ICSI), which consists of injecting a single sperm directly in the cytoplasm of a mature egg by a microscopic needle. This technique offers the highest pregnancy rate because it avoids the sperm having to move to fertilize the egg

Treatment of asthenozoospermia must always be accompanied by healthy living advice, which in some cases can help re-establish fertility.

Obtenga lo último de nuestro blog de Ingenes

Manténgase actualizado con información precisa sobre la reproducción asistida y los tratamientos de fertilidad, y conozca el camino para expandir su familia.
Este sitio web almacena cookies en tu computadora. Estas cookies sirven para recolectar información respecto a cómo interactúas con nuestro sitio web y nos permite recordarte. Utilizamos esta información con la finalidad de mejorar y optimizar tu experiencia de búsqueda, además de analizar y medir nuestras visitas en este sitio y otros medios. Para saber más sobre las cookies que utilizamos, te invitamos a leer nuestra Política de Privacidad.
Privacy Policy