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Vasovasostomy (VV)

The vas deferens is the tube (duct) that carries sperm from the testicle to the prostate. Vasectomy is a leading cause of obstruction of the male reproductive ducts, but many men may be born with or acquire such obstructions later in life from trauma or infection.

The ultimate success of a reconstructive procedure is pregnancy and is dependent on several factors: the age and fertility of the female partner, the age and previous fertility of the male, the method of vasectomy, the surgeon�s experience, the technique of vasectomy reversal (the use of optimal magnification/microscope), the quality of the length of time since the vasectomy was performed. In a large study of 1500 patients from multiple institutions, the success rate correlated with the length of time since vasectomy. The shorter the interval from vasectomy to reversal, the higher the success rate. In men whose obstructed interval was less than 3 years, the likelihood of sperm present in the semen after reversal is as high as 95% and pregnancy was observed in 75% of the wives. On the contrary, when the obstructed interval was greater than 15 years, only 70% of men will have sperm in their semen following reversal and the pregnancy rate was significantly lower at 30% in most me, i.e. those with obstructed intervals between 4-14 years, the likelihood of having sperm in the semen is about 80% with a pregnancy rate of 45-60%. In interpreting this data, one should keep in mind that the age of the wives plays an important role in the overall pregnancy rate. Men who are older, i.e. those who have had long obstructed intervals, may have older partner. This difference may account for some of the pregnancy rate difference as outline above.

It is important to realize that the longer the interval of vasectomy, the more likely that a more complex reconstruction may be necessary this operation is called an epididymovasostomy (EV). At the time of surgery, it may be determined that this procedure will indeed be necessary based on the quality of the fluid obtained from the vas deferens tube. This procedure connects the vas to the very small tubes of the epididymis. The epididymis is a structure situated behind the testicle which contains very small caliber tubes which is the first part of the male reproductive duct system. The success rate for epididymovasostomy is lower than for the standard vasectomy reversal (vasovasostomy or VV). Overall success rate for this procedure is about 40-60% that sperm will be present in the semen and 25-40% change in terms of pregnancy.

Vasovasostomy is done on and outpatient basis. Anesthesia will be either general or spinal/epidural. Oral pain medication will be either general or spinal/epidural. Oral pain medication will be prescribed and is generally required for 24-48 hours. Tylenol or Motrin may then be used. An ice pack should be placed in the scrotum for the first 24 hours. No heavy lifting, sports, or sexual activity should be engaged for 4 weeks. You may return to work in 7 days unless your job is physically demanding; then you may return in 10-14 days. A semen analysis will be obtained 8-12 weeks after surgery. Some men may not have sperm for 6 months to a year. If the more complex epididymovasostomy is performed, repeat semen analysis may be required for up to 18 months.

The average length of time to achieve pregnancy is about one year. Up to 10% of patients will develop a recurrent obstruction after sperm were initially present. I recommend that you consider sperm banking once the sperm count has peaked to safeguard against this occurrence. Bleeding and infection are uncommon complications. Scarring and persistent pain at the operative site occurs very rarely.

Epididymovasostomy (EV)

Occlusion of the male reproductive duct is noted in 10-20% of all infertile men. It is a very important cause because it is surgically treatable. The causes of ductal obstruction include congenital absence of narrowing of the duct, scarring following infection, and vasectomy. The hallmarks of men with obstruction include azoospermia (no sperm in the ejaculate), normal testicular size and normal hormone levels. The diagnosis of obstruction can be made is, in addition to the above characteristics, the volume of the ejaculate is normal and adequate sperm production is present on testis biopsy.

The epididymis is the structure on the back of the testicle which contains the very small tubes through which the sperm migrate and mature in. The operative procedure to correct and epididymal obstruction is called epididymovasostomy. In this procedure the vas deferens is attached to the epididymal tubule in order to bypass the obstruction in between.

The finding of sperm within the epididymal tubule is the best predictor of success. In fact, if high quality sperm are encountered in the epididymal fluid at the time of operation, we recommend sperm banking of this sample. This is done as an insurance policy in case the procedure I unsuccessful. Their sperm can then be used for IVF with intracytoplasmic sperm injection (IVF/ICSI). The overall success rate for epididymovasostomy is about 40-60% that sperm will be present following the operation and 25-40% chance of pregnancy. Some men may not have sperm present for up to 18 months. Pregnancy may take one to two years to achieve. There is also a 10% chance that a recurrent obstruction will develop after sperm were initially seen. Again, I recommend sperm banking as a safeguard against this problem.

The procedure is done on an outpatient basis and will take 4-5 hours. An operating microscope is required in order to visualize the very fine epididymal tubules. Anesthesia will be either general or spinal. A prescription for oral pain medication will be written and may be required for up to 48 hours. An ice pack should be placed on the scrotum for the first 24 hours. No heavy lifting, sports, or sexual activity should be engaged for four weeks. You may return to work in 7 days unless your job is physically demanding; then you may return in 14-21 days. As semen analysis will be obtain 8-12 weeks after surgery.

You should also consider the option of sperm harvest at the time of this procedure. In men whose procedures were unsuccessful, the need for sperm remains. We can either collect sperm from the epididymal fluid or remove a small portion of the testis and extract sperm for storage. This sperm can then be used for IVF or be substituted later are of sufficient quality and quantity, they may be used for the much similar insemination rather than IVF.

SPERM ASPIRATION/EXTRACTION

Recent breakthrough in IVF enables u to achieve pregnancy with a very small number of sperm. In men with production problems or obstruction not amenable to surgical reconstruction, directly obtaining sperm from the testicle or epididymis for IVG is the only option for biological parenthood.

Testicular and epididymal sperm are functionally immature. They are not very motile and most do not have the ability to home in on the eggs, even if they are placed together in a test tube. They must be directly injected into the eggs to achieve fertilization through a procedure called IVF/ICSI.

Testicular and epididymal sperm cannot be used for intrauterine insemination due to their functional immaturity and the low number of such sperm retrievable. Their use required IVF/ICSI.

The sperm may be sucked out with a small needle (aspiration) or processed out from a small piece of testis tissue (extraction). Aspiration can only be used in men with normal sperm production it is less traumatic but removes only a very small number of sperm, too few for sperm banking, but sufficient for immediate use. Sperm aspiration/extraction with IVF/ICSI is and alternative to surgical reconstruction. There are pros and cons for each approach; in my opinion, vasectomy reversal is more appropriate for most men, if one considered the likelihood of success and overall costs.

WE strongly recommend that you become will-informed of all aspects of these options before reaching a decision. We are here to help you, and we look forward to the opportunity to discuss with you the various options available and answer any questions you may have.

This monograph was supplied by Jerry Yuan, MD Assistant Professor of Surgery (Urology) Emory University of Medicine.

These charges are estimates and are subject to change*. The fees represent a two (2) hour surgery. The anesthesia and room charge at Omaha Surgical Center will increase accordingly if the surgery takes more than two (2) hours. The doctor�s fee stays the same regardless of time in surgery. Physician�s fee is due before surgery is scheduled.

Boystown:
$2646.00- Physician Fee
$2500.00- EKG/Labs
$600.00- Anesthesia

Omaha Surgical Center:
$2646.00- Physician Fee
$3900.00- Omaha Surgical Center Fee

Note: If the patient is over 40 years of age, there may be an addition charge for EKG and lab work (approximately $450.00*).

*****Initial consult fees are not included with the surgical fee.