What Is a Blocked Fallopian Tube?

A blocked fallopian tube is a condition where the lumen or patency of the tube is obstructed due to various conditions. The blockage can be at various sites along the Fallopian tubes. This prevents the pickup of the egg or the sperm from reaching the egg. This blockage can cause fertility problems because the egg and sperm cannot meet, making it difficult or impossible to conceive naturally.

Symptoms of Blocked Fallopian Tubes

Blocked fallopian tubes often do not cause any noticeable symptoms. Many women only discover they have a blocked tubes when they have trouble getting pregnant. In some cases, however, blocked fallopian tubes can lead to mild, regular pain on one side of the abdomen. This pain is usually due to a condition called salpingitis (swelling of the tubes) or hydrosalpinx, where fluid fills and enlarges a blocked fallopian tube.

How Does a Blocked Fallopian Tube Affect Fertility?

A blocked fallopian tube is one of the causes of female infertility. Since fertilization of the egg by sperm happens in the fallopian tube, a blockage can prevent this from occurring. If both fallopian tubes are completely blocked, natural pregnancy cannot happen and also treatment modalities like IUI will not succeed. However, if only one tube is blocked, it might still be possible to conceive because the egg can travel through the unaffected tube.

Partial blockages are also problematic. They can increase the risk of an ectopic pregnancy, which occurs when a fertilized egg gets stuck in the fallopian tube instead of moving towards the uterus. This growing pregnancy in the tubes might lead to the rupture of the tube and bleeding inside the abdomen. This condition can be life threatening emergency.

What Causes Blocked Fallopian Tubes?

Several factors can cause fallopian tubes to become blocked:

1. Pelvic Inflammatory Disease (PID)

This infection or inflammation can cause scarring and blockages or hydrosalpinx.The most common infection in India causing this is Tuberculosis.

2. Endometriosis

Tissue similar to the lining inside the uterus grows outside it, possibly blocking the fallopian tubes.

3. Sexually Transmitted Infections (STIs)

Infections like chlamydia and gonorrhea can cause scarring that blocks the tubes.

4. Past Ectopic Pregnancy

This can leave scars that block the fallopian tubes.

5. Fibroids

These noncancerous growths might not actually block the tubes but can distort them and cause blockage due to abnormal position of the tubes.

6. Past Abdominal Surgery

Any surgeries in the abdomen especially open surgeries can cause adhesions that block the tubes.

Diagnosis of Blocked Fallopian Tube

A common method of diagnosing a blocked fallopian tube is hysterosalpingography (HSG). This X-ray procedure involves injecting a dye into the uterus and visualization of the passage of the dye from uterus into the fallopian tubes and the spill of the dye into pelvis if they are open. The dye helps the doctor see if the tubes are open or blocked and also the site of block. HSG is usually performed in a doctor’s office within the first half of the menstrual cycle.

SSG is also an alternative test where ultrasound is used to check passage of dye through tubes.

If HSG results are unclear, a laparoscopy might be needed. This surgical procedure involves direct visualization of the tubes and also passage of the dye through and out of them as spillage If a blockage is found in tubes, the surgeon might be able to reopen them during the procedure.

Treatment Options for Blocked Fallopian Tubes

The treatment for blocked fallopian tubes depends on the cause and severity of the blockage:

1. Laparoscopic Surgery: This minimally invasive surgery can remove small amounts of scar tissue or adhesions.

2. Treatment for Hydrosalpinx: If a tube is filled with fluid, it might need to be removed or opened through surgery.

3. In Vitro Fertilization (IVF): If surgery is not an option or if both tubes are blocked, IVF might be recommended. This procedure involves retrieving eggs from the ovaries, fertilizing them with sperm in a lab, and then implanting the fertilized egg (embryo) directly into the uterus.

Possibility of Pregnancy with blocked fallopian tubes

The chances of getting pregnant with blocked fallopian tubes depend on various factors:

  • One side blockage or both sides
  • The location of the blockage (near the uterus or the ovary).
  • The severity of the blockage.
  • The type of treatment received.
  •  Associated male and female factors (especially age) of infertility.

Outlook for Blocked Fallopian Tubes

While blocked fallopian tubes can cause infertility, there are treatments available that can help. Laparoscopic surgery can remove blockages in some cases, improving fertility. When surgery is not an option, IVF offers a viable path to pregnancy for many women.

It is essential to work closely with your doctor to understand your specific situation and the best treatment options for you. With the right approach, many women with blocked fallopian tubes can still achieve a successful pregnancy.

If you suspect you have blocked fallopian tubes or are having difficulty getting pregnant, consult with fertility specialist for an accurate diagnosis and appropriate treatment plan. With advancements in reproductive medicine, many women with blocked fallopian tubes can still achieve their dream of becoming mothers.


What are the symptoms of blocked fallopian tubes?

Blocked fallopian tubes often show no symptoms. Some women may experience mild, regular pain on one side of the abdomen, usually due to hydrosalpinx, where fluid fills the tube. Conditions causing blockages, like endometriosis, might lead to painful and heavy periods.

How do you clear blocked fallopian tubes?

Blocked fallopian tubes can sometimes be cleared using laparoscopic surgery to remove scar tissue or adhesions. In cases of hydrosalpinx, fluid-filled tubes may need to be drained or removed. Severe blockages might require in vitro fertilization (IVF) for conception.

Can I get pregnant with blocked fallopian tubes?

If both tubes are substantially blocked, natural pregnancy is impossible without treatment. Partial blockages allow for potential pregnancy but increase the risk of ectopic pregnancy. A fertilized egg might struggle to move past the blockage to the uterus, causing complications.

How do periods occur if fallopian tubes are blocked?

Blocked fallopian tubes do not prevent menstruation. The ovaries still release hormones, and the uterine lining sheds each month.

How to detect blocked fallopian tubes?

A hysterosalpingogram (HSG) is used to detect blocked fallopian tubes. This X-ray test involves injecting dye into the uterus and fallopian tubes. If the dye doesn’t flow through the tubes, it indicates a blockage, visible on the X-ray images. SSG and laparoscopy are other options.