This procedure can be used to produce ejaculation when neurological dysfunction prevents it. An electrical rectal probe generates a current that stimulates nerves and induces ejaculation; semen dribbles out through the urethra and is collected. Retrograde ejaculation is associated with the procedure and sodium bicarbonate is usually taken the day before to make the urine alkaline (nonacidic) and nondetrimental to sperm. Candidates for electroejaculation include men who have undergone testis removal (orchiectomy), retroperitoneal lymph node dissection (RPLND), and those with spinal cord injuries.
This technique is used to obtain sperm from the testes or epididymis when obstruction, congenital absence of the vas deferens, failed vasectomy reversal, or inadequate sperm production causes azoospermia. Using a technique called micro epididymal sperm aspiration (MESA), a surgeon makes an incision in the scrotum and gathers sperm from the epididymis, the elongated, coiled duct that provides for the maturation, storage, and passage of sperm from the testes. Percutaneous epididymal sperm aspiration (PESA, or fine needle aspiration) is similar to MESA but does not involve microsurgery. A physician uses a needle to penetrate the scrotum and epididymis and draws sperm into a syringe. Testicular sperm extraction (TESE), the removal of a small amount of testicular tissue, is used to retrieve sperm from men with impaired sperm production, or when MESA fails.
These procedures are done under local anesthesia, usually take about 30 minutes, and may cause pain and swelling.
This procedure isolates and prepares the healthiest sperm for insemination. Sperm and washing medium are combined and spun rigorously (centrifuged) and the process is repeated if necessary. The process separates sperm from white blood cells and fatty acids (prostaglandins) in the semen that may hinder sperm motility. It also concentrates sperm, which increases the chance for conception.
Sperm retrieved by MESA, PESA, or TESE may be used in in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). IVF involves combining eggs with sperm in a laboratory, providing proper fertilization conditions, and transferring the resulting embryos to the uterus. To retrieve an egg, a specialist uses ultrasound to guide a fine needle through the vaginal wall and into the ovary or makes an incision in the abdomen to get to the ovary (laparoscopy). Once the eggs are retrieved, they are combined with prepared sperm in a sterile dish for 2 to 4 days. After fertilization, the embryos are transferred to the uterus. IVF is used most commonly for infertility caused by female reproductive abnormalities.
Intracytoplasmic Sperm Injection (ICSI)
ICSI may be used with immotile sperm during in vitro fertilization. Using a tiny glass needle, one sperm is injected directly into a retrieved mature egg. The egg is incubated and transferred to the uterus.
Fertilization occurs in 50% to 80% of cases and approximately 30% result in a live birth. The egg may fail to divide or the embryo may arrest at an early stage of development. Younger patients achieve more favorable results and poor egg quality and advanced maternal age result in lower success rates.
ICSI does not increase the incidence of multiple pregnancies. Long-term information about the health and fertility of children conceived through this procedure is not available because it was first performed in 1992.
While excess sperm from MESA or PESA can usually be frozen for future use, most TESE-derived sperm are not of sufficient quality or quantity for frozen storage (cryopreservation). Multiple MESA or PESA procedures are not recommended, since repetition can lead to scarring.
Gamete intrafallopian transfer (GIFT) This procedure is recommended for couples with unexplained fertility problems and normal reproductive anatomy. Mature eggs and prepared sperm are combined in a syringe and injected into the fallopian tube using laparascopy. Embryos that result from this procedure naturally descend into the uterus for implantation. Know More.
Average conception rate for these procedures is about 30%.
Drug therapy for male infertility includes medications to improve sperm production, treat hormonal dysfunction, cure infections that compromise sperm, and fight sperm antibodies. The administration of testosterone is similar to that used to treat testosterone deficiency.
Surgery for male infertility is performed to treat reproductive tract obstruction and varicocele. Vasoepididymostomy is a microsurgical procedure that corrects obstruction in the coiled tube that connects the testes with the vas deferens (epididymis). Obstructions commonly result from STDs and also include cysts and tubal closure (atresia), which is usually genetic. Vericocelectomy, the removal of a varicocele from the testes, often results in increased sperm count.
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