Post-Vasectomy Concerns: Why Am I Ejaculating Urine Instead of Semen? - Urology

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Post-vasectomy issues


The man has been sterilized for almost a year, but in recent sexual encounters, he has been ejaculating urine instead of semen.
He would like to consult a doctor about this issue.

Wū wū, 30~39 year old female. Ask Date: 2020/06/08

Dr. Du Shixi reply Urology


Hello: It is unlikely to be urine; it may be diluted semen, as some individuals experience changes in semen after surgery.
Wishing you good health.

Reply Date: 2020/06/08

More Info


After a vasectomy, it is not uncommon for patients to experience various changes in their sexual function and ejaculation. However, the specific concern of ejaculating urine instead of semen can be quite alarming and warrants a thorough understanding of the underlying mechanisms involved.

Firstly, it is essential to clarify that a vasectomy is a surgical procedure intended to provide permanent contraception by cutting and sealing the vas deferens, the tubes that carry sperm from the testicles to the urethra. After the procedure, sperm is no longer present in the ejaculate, but the seminal fluid produced by the seminal vesicles and prostate gland should still be present, resulting in the expulsion of a fluid that is typically a mixture of sperm and seminal fluid during ejaculation.

The phenomenon of ejaculating urine instead of semen could be attributed to several factors:
1. Retrograde Ejaculation: This condition occurs when semen enters the bladder instead of exiting through the urethra during ejaculation. It can happen if the bladder neck does not close properly during ejaculation, allowing the semen to flow backward into the bladder. When the individual subsequently urinates, the urine may contain residual semen, leading to the perception of "ejaculating urine." This condition can be a result of nerve damage, certain medications, or surgical procedures affecting the bladder neck.

2. Bladder Dysfunction: If there is an underlying issue with bladder control or function, it may lead to the mixing of urine and semen. Conditions such as bladder infections, inflammation, or other urological issues could contribute to this problem.

3. Infection or Inflammation: Infections of the urinary tract or prostate can lead to changes in ejaculation. If there is inflammation in the prostate or seminal vesicles, it may alter the composition of the ejaculate, potentially leading to a situation where urine is expelled instead of semen.

4. Psychological Factors: Anxiety or stress related to sexual performance can sometimes manifest in physical symptoms, including changes in ejaculation. It is essential to consider the psychological aspect of sexual health as well.

Given these possibilities, it is crucial for the individual experiencing this issue to consult a healthcare provider, preferably a urologist. A thorough evaluation, including a physical examination, urinalysis, and possibly imaging studies, may be necessary to determine the exact cause of the problem. The healthcare provider may also inquire about any medications being taken, previous surgeries, or other health conditions that could contribute to the symptoms.

In terms of management, treatment options will depend on the underlying cause. If retrograde ejaculation is diagnosed, there may be options to manage the condition, including medications that help the bladder neck close properly during ejaculation. If an infection or inflammation is present, appropriate antibiotics or anti-inflammatory medications may be prescribed.

In conclusion, while experiencing the expulsion of urine instead of semen after a vasectomy can be concerning, it is essential to approach the situation with a clear understanding of the potential causes. Seeking medical advice is the best course of action to address the issue effectively and to ensure overall sexual health and well-being.

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