Does Retrograde Ejaculation Cause Infertility? Let’s Understand

What Is Retrograde Ejaculation?

Retrograde ejaculation is a condition in which semen does not exit during ejaculation but instead goes backwards and enters the bladder. Usually, the bladder neck closes completely during ejaculation, but in this case, it does not. As a result, the semen follows the path of least resistance and empties into the bladder. Although the physical experience of climax is retained, the principal signal of diversion of the biological process is the dry orgasm or a smaller amount of fluid.

Even though retrograde ejaculation is not a health issue, its early detection and control are important to maintain reproductive well-being.

How Does the Bladder Neck Function During Ejaculation?

Understanding this condition requires knowledge of the autonomic nervous system and its role in ejaculation.  Sympathetic nerves control ejaculation. These nerves trigger the contraction of the smooth muscle in the prostate and seminal vesicles. At the same time, they stimulate the internal urethral sphincter (the bladder neck) to close.

When these nerve signals are disrupted or the bladder neck muscles are damaged, the valve remains open. This enables the high-pressure ejaculate to pass into the bladder, where it ultimately becomes mixed with the urine and is expelled later the next time during urination.

Also Read: Best Foods to Increase Sperm Count Naturally

Does Retrograde Ejaculation Cause Infertility?

Yes, retrograde ejaculation can be a known cause of male factor infertility, but one should differentiate between infertility and sterility. In this state, a man is still producing healthy, viable sperm in his testes, but the delivery system is impaired. Due to the diversion of the sperm to the bladder, the sperm do not get to the female reproductive tract during natural intercourse.

Natural fertilisation of an egg cannot take place unless sperm enters the female reproductive tract. Nonetheless, since the production of sperm is typically normal, retrograde ejaculation is a highly treatable form of infertility. By medical intervention, the sperm can be retrieved and utilised in assisted reproduction, such that biological fatherhood is a very achievable goal in most men with this diagnosis.

What Are the Symptoms of Retrograde Ejaculation?

Most of the symptoms of retrograde ejaculation are experienced during and after sex. It is usually neither painful nor physically uncomfortable.

1. Dry Orgasm: The most frequent symptom is the ejaculation of little or no semen during orgasm.
2. Cloudy Urine: Due to the emission of semen being deposited into the bladder, the urine that is released immediately after sex is usually cloudy or milky.
3. Inability to Conceive: This condition is usually recognised in a situation when a couple is unable to conceive after trying for a year or more.

What Causes This Condition to Develop?

The closure of the bladder neck can be interfered with by several factors. These can be broadly categorised into three: surgical, medical and neurological.

• Surgical Trauma: The most common causes are operations on the prostate or the neck of the bladder. Transurethral Resection of the Prostate (TURP), commonly done to treat an enlarged prostate (BPH), can often cause retrograde ejaculation since the surgery can destroy the internal sphincter.
• Nerve Damage: Chronic conditions may impair the nerves that control the bladder neck. It is most commonly associated with diabetes, as chronic high blood sugar levels may result in autonomic neuropathy. The neural pathways needed to achieve proper ejaculation can also be impaired by Multiple Sclerosis (MS) and spinal cord injuries.
• Physical Abnormalities: Sometimes, congenital problems with the urethra or bladder structure may be a factor.

Can Medications Trigger Retrograde Ejaculation?

Yes, certain medications are known to relax the bladder neck, leading to "iatrogenic" or drug-induced retrograde ejaculation.

• Alpha-blockers: These medications are used to treat high blood pressure or an enlarged prostate (e.g., Tamsulosin/Flomax, Alfuzosin) and relax smooth muscle tissue, which can unintentionally cause the bladder neck not to close during climax.
• Antipsychotics and Antidepressants: Medications prescribed to treat mental health conditions may disrupt the signals or impulses of the sympathetic nervous system needed to ejaculate.

In many cases, normal ejaculation is restored if the drug is stopped (under the supervision of a doctor)

How Do Doctors Diagnose the Condition?

The diagnosis is simple and aims to detect the presence of sperm in urine where it is not supposed to be.

1. Physical Exam and History: The doctor will inquire about surgeries, medicines, and ejaculate volume.
2. Post-Ejaculatory Urinalysis (PEU): This is the conclusive test. The patient is requested to masturbate and immediately after that give a urine sample. The urine is examined under a laboratory microscope. In case of a large number of sperm in the urine, the diagnosis of retrograde ejaculation has been made.

Can Retrograde Ejaculation be Treated With Medication?

When the condition is due to nerve dysfunction (e.g., from diabetes or minor nerve damage) rather than irreversible loss of bladder neck tissue from surgery, medications can be helpful.

• Sympathomimetics: Pseudoephedrin or Imipramine may be used to raise the tone of the bladder neck muscle to make the muscle close during ejaculation.
• Effectiveness: These drugs are most effective when the cause is either neurological or drug-related. They are not very successful when the bladder neck has been surgically modified.

What Are the Assisted Reproductive Options?

In the case when medications cannot restore forward ejaculation, attention is paid to the recovery of the sperm to be used in fertility therapies.

• Intrauterine Insemination (IUI): Recovered sperm is cleaned and concentrated in a laboratory, and is directly injected into the uterus of the woman during ovulation.
• In Vitro Fertilisation (IVF): IVF is used in cases of low sperm quality or failure of IUI. The eggs are collected and fertilised with the isolated sperm in a laboratory.
• Intracytoplasmic Sperm Injection (ICSI): This method is usually combined with IVF. One live sperm is then chosen and directly injected into the egg, which is optimal when the sperm count in the recovered urine is very low.

How is Sperm Retrieved from Urine?

Retrieving sperm from the bladder is a delicate procedure that needs to be prepared very carefully since urine is acidic and harmful to sperm.

1. Alkalinization: The patient can be asked to drink a sodium bicarbonate (baking soda) solution or take tablets to alkalinise the urine.
2. Emptying the Bladder: The patient empties their bladder completely before the procedure.
3. Sperm Recovery: The patient provides a urine sample, or a catheter is inserted to remove the fluid after ejaculation.
4. Lab Processing: The laboratory separates sperm and urine using a centrifuge and then rinses them in a nutrient-rich medium to maintain sperm motility.

Are There Lifestyle Changes to Help?

While lifestyle changes cannot "cure" a structural failure of the bladder neck, managing underlying health conditions is crucial. Further nerve damage can be prevented by proper management of blood glucose levels in people with diabetes. Moreover, in case the condition is a side effect of a particular medication, a doctor can probably prescribe a different one that will not influence ejaculation.

Can Surgery Resolve the Issue?

Rarely is surgery done to correct retrograde ejaculation, as the success of surgical reconstruction of the bladder neck is low compared to the high success rates of sperm retrieval and IVF. The majority of fertility experts advise an emphasis on retrieving the healthy sperm instead of trying to surgically modify the urinary tract structure.

What is the Success Rate for Conception?

The prognosis for men with retrograde ejaculation is favourable. Since the process of producing sperm is usually healthy, the act of rescuing the sperm in urine or through surgery is often fruitful with high-quality sperm.

The success rates of IUI and IVF with urinary sperm are equal to those with traditionally ejaculated sperm, as long as the sperm is swiftly processed by an experienced embryologist. In couples where the female partner does not have any fertility problems, the likelihood of a successful pregnancy is very high once the barrier to delivery is overcome.

Conclusion

Retrograde ejaculation is a unique medical disorder that is not harmful, but it is a major barrier to natural conception. It prevents sperm from reaching the egg by making the semen flow into the bladder instead of the urethra. Nonetheless, as explained in this paper, the condition does not imply sterility.

By using post-ejaculatory urinalysis, doctors can verify the diagnosis and devise the best course of action. Regardless of whether the solution is a change of medications, sympathomimetic drugs to tighten the bladder neck, or even the assisted reproductive technologies such as IUI and IVF with the urine-retrieved sperm, the possibilities of fatherhood are not limited. It is important to note that the problem is mechanical and not functional, so that when couples decide to undergo fertility treatments, they do so with confidence.