The Fallopian tubes, also called oviducts, are two structures of the female reproductive system that connect the ovaries to the womb. Their function is to transport the egg as well as the resulting embryo after fertilization.
Keeping this in mind, any blockage that prevents the tubes from carrying out their function properly may lead to tubal factor infertility.
Based on whether the blockage affects one or both tubes, we can distinguish between a unilateral or bilateral blockage, respectively.
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What are the causes of tubal obstruction?
Only in one-third of the women who visit a fertility clinic, the cause of infertility is a blockage in the Fallopian tubes. Considering this statistics, it is one of the main cause of female infertility.
In order for pregnancy to occur naturally, tubal patency is a sine qua non condition. Only with patent tubes, the sperm will be able to hit the egg and fertilize it.
What follows are the potential causes of blocked Fallopian tubes:
- Salpingitis
- It causes inflammation of the fallopian tubes. Normally, this condition is caused by microorganisms or a Sexually Transmitted Disease (STD), such as Chlamydia trachomatis, due to its dissemination to a nearby organ, or endometriosic lesions.
- Endometriosis
- Endometrial tissue grows outside the womb, causing endometrial adhesions that block the tubes and what's more, hinder their movement.
- Hydrosalpinx
- Medical term for fluid in the tubes, particularly next to the fimbriae. This pathology is caused by an infection as well.
- Surgery
- Surgical procedures performed around the pelvic area may affect the structure of the Fallopian tubes. Tubal ligation is included in this group.
If you want to learn more about the tubal factor in relation to infertility, we recommend you keep reading the following post: Female infertility due to tubal factor: causes and treatments.
Symptoms & diagnosis
Women with their tubes blocked do not have any symptoms indicating that there exists an obstruction.
Moreover, routine ultrasound scans performed at the OB/GYN's office are rarely able to detect a blockage in the tubes. So, in most cases, the blockage goes unnoticed for several years till it is finally detected using other diagnostic methods.
Also, when the blockage is caused by an acute infection that causes pus, the walls of the tubes may adhere to each other, causing pain, malaise, or fever.The good news is that this type of infections do not have symptoms in most cases.
The main symptom of a tubal blockage, especially if it is bilateral, is infertility. It is most common for a woman to discover that her fallopian tubes are blocked after undergoing a female fertility study due to difficulty conceiving.
In most cases, Fallopian tube blockage is detected after a fertility evaluation, provided that any of the following tests is included:
Hysterosalpingography (HSG)
Hysterosalpingography or hysterosalpingogram (HSG) is a key diagnostic test for the assessment of tubal patency. Furthermore, it helps identifying some abnormalities of the uterus as well.
HSG involves using a contrast medium through the cervix with a catheter or cannula. This iodized contrast medium fills up the uterine cavity and the tubes. If some kind of blockage exists, the fluid will be unable to travel to the tubes and be expelled through the peritoneal cavity.
The passage of the contrast medium through the female reproductive tract is registered with a series of X-ray images.
To perform a hysterosalpingogram, anesthesia is not required. It should be performed on the days between menstruation and ovulation to make sure that the woman is not pregnant.
Potential complications and side effects of HSG include allergic reactions to iodized contrast dye, and pain in case there exists a blockage. However, the passage of the contrast medium could unblock the tubes and cause the woman to recover her fertility.
Hysterosalpingosonography (sono-HSG or HSSG)
A sono-HSG or HSSG is an improved version of HSG that does not use a iodized contrast medium or X-rays to examine the female reproductive tract.
Images are taken via transvaginal ultrasound. For this reason, a HSSG can be performed at the OB/GYN's office, which means that patients are not required to visit a special subunit or wait for the results.
Based on the contrast medium used to replace the iodized contrast dye, we can distinguish two types of sono-HSG:
- Hysterosalpingo-contrast-sonography (HyCoSy)
- It uses a physiological saline solution or galactose solution is used as contrast medium.
- Hysterosalpingo-foam sonography (HyFoSy)
- Performed using ExEm-gel for creating stable foam. It presents an excellent tubal transit and reduces the discomfort for the patient.
These groundbreaking techniques reduce the risks associated with X-ray radiation and allergic reactions to the materials used.
The gel foam used for a HyFoSy is created thanks to the ExEm Foam Kit, an easy-to-use product to check tubal patency.
Treatment & pregnancy
Blocked Fallopian tubes can be treated differently depending on the cause. If it an infection, your doctor will prescribe you antibiotics.
Laparoscopic surgery may be required to unblock the tubes and fix the tubes. However, one should take into account that this option does not translate into being able to get pregnant immediately afterwards. In fact, it can increase the risk of ectopic pregnancy.
In cases of irreversible tubal obstruction, turning to Assisted Reproduction may be recommended, including:
- Intrauterine Insemination (IUI)
- Only in cases of unilateral blockage. During this procedure, it is required that the woman develops one or two ovarian follicles in the ovary connected to the healthy tube. Only if this is possible, IUI can be successful.
- In Vitro Fertilization (IVF)
- Actually, it is the most advisable option in cases of tubal blockage. After undergoing controlled ovarian stimulation, the mature oocytes are retrieved and fertilized in the lab.
In the worst-case scenario, removing the tubes may be required (salpingectomy). The good news is that IVF continues being an option even after this surgical procedure.
If you need to undergo IVF to become a mother, we recommend that you generate your Fertility Report now. In 3 simple steps, it will show you a list of clinics that fit your preferences and meet our strict quality criteria. Moreover, you will receive a report via email with useful tips to visit a fertility clinic for the first time.
FAQs from users
Is surgery a solution to blocked fallopian tubes?
Fallopian tube obstruction occurs when the tubes become blocked, clogged or in the presence of fibrotic processes that cause them not to function as they should. They are a major problem of infertility. Some studies establish that in 20-24% of the cases of female infertility there is some type of tubal alteration.
Tubal unblocking surgery is extremely complex, requires a long time to assess its effectiveness, and we cannot guarantee that it will be 100% effective. This type of procedure can again lead to the formation of adhesions, tubal fibrosis and may be one of the reasons for the formation of an ectopic pregnancy (outside the uterine cavity).
For all these reasons, IVF is the treatment of choice in cases of bilateral tubal obstruction.
What are the Fallopian tubes and what do they do?
The fallopian tubes are ducts approximately 12 cm long. These ducts extend from the upper part toward the ovaries. Therefore, each fallopian tube leads to one ovary.
It is in the fallopian tubes where the egg and sperm meet for fertilization to take place. Besides fertilization, the fallopian tubes also transport the embryo to the uterus for implantation and the development of the pregnancy.
Can you unblock fallopian tubes naturally with herbs?
No traditional remedy is known to help eliminate a tubal obstruction. Blocked fallopian tubes can be unblocked through laparoscopy.
If pregnancy is desired, assisted reproduction techniques are also an option. In this way, a woman with blocked fallopian tubes can become pregnant. If you are going to start fertility treatment for this reason, our guide Fertility with Sense will provide you with key information that will be very helpful.
Why would a woman have a closure of the fallopian tubes?
The causes of tubal obstruction can be diverse. Some possible reasons that cause blockage of the fallopian tubes are the following:
- Salpingitis or inflammation of the fallopian tubes.
- Endometriosis, that is, the presence of endometrial tissue outside the uterus.
- Hydrosalpinx, which is the accumulation of fluid in the fallopian tube.
Additionally, if a woman undergoes any type of pelvic surgery, her fallopian tubes could also be affected.
Can you still get pregnant with blocked fallopian tubes?
No. If there is obstruction in both fallopian tubes, natural pregnancy will not be possible.
However, women with both fallopian tubes blocked can achieve pregnancy through in vitro fertilization (IVF).
On the other hand, if only one fallopian tube is blocked but the other is healthy, the woman could still conceive naturally. However, the chance of natural pregnancy in this case is lower than if both fallopian tubes were open.
Another option when only one fallopian tube is open would be to perform artificial insemination while monitoring that the woman ovulates on the side that is not blocked.
Suggested for you
Hysterosalpingography (HSG) is the main diagnostic test used to find out whether the Fallopian tubes are patent or not. Get more info by clicking the following link: How Is a Hysterosalpingography (HSG) Performed?
If you want to learn more about tubal factor infertility, read: Tubal Factor Infertility - Causes & Treatment.
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References
Atri M, Tran CN, Bret PT, Aldis AE, Kintzen G. Accuracy of endovaginal sonography for the detection of fallopian tube blockage. J Ultrasound Med 1994;13:429–34 (View)
Friberg B, Joergensen C. Tubal patency studied by ultrasonography. A pilot study. Acta Obst Gynecol Scand 1994;73:53–5 (View)
Heikkinen H, Tekay A, Volpi E, Martikainen H, Jouppila P. Transvaginal salpingosonography for the assessment of tubal patency in infertile women: methodological and clinical experiences. Fertil Steril 1995;64: 293–8 (View)
Lorente J, López A, Pomares E. Manejo del hidrosalpinx. H.U. Reina Sofía. Córdoba.
Martínez-Cañavate MJ, Quea G, González S. Factor tubárico: hidrosalpinx. En: Remohí, Bellver, Matorras, Ballesteros, Pellicer. Manual práctico de esterilidad y reproducción humana. 4ª edición. Madrid: Editorial Médica Panamericana S. A.; 2012. p. 119–125.
Mol BWJ, Swart P, Bossuyt PMM, van Beurden M, van der Veen F. Reproducibility of the interpretation of hysterosalpingography in the diagnosis of tubal pathology. Hum Reprod 1996;11:1204–8 (View)
Pellerito JS, McCarthy SM, Doyle MB, Glickman MG, DeCherney AH. Diagnosis of uterine anomalies: relative accuracy of MR imaging, endovaginal sonography, and hysterosalpingography. Radiology 1992; 183:795-800 (View)
Volpi E, Piermatteo M, Zuccaro G, Baisi F, Sismondi P. The role of transvaginal sonosalpingography in the evaluation of tubal patency. Minvera Ginecol 1996;48:1–3.
FAQs from users: 'Is surgery a solution to blocked fallopian tubes?', 'What are the Fallopian tubes and what do they do?', 'Can you unblock fallopian tubes naturally with herbs?', 'Why would a woman have a closure of the fallopian tubes?' and 'Can you still get pregnant with blocked fallopian tubes?'.
I had a salpingectomy due to blocked tubes and a severe infection that was left undiagnosed for a long time. Now, my new partner and I are planning for pregnancy but I feel like this isn’t possible anymore? Please tell me there is still a chance.
Hi Liz,
I’m sorry for what you have gone through. However, the good news is that you still have the option to become a mother thanks to In-vitro-Fertilization (IVF). This treatment consists of a controlled ovarian stimulation treatment and follicular puncture in which your eggs are retrieved for fertilization with your husband’s sperm in the laboratory. Read the whole process here: What Is In Vitro Fertilization (IVF)? – Process, Cost & Success Rates.
Hope this helps,
all the best.
I just had my first appointment at my fertility clinic and they suggest hysterosalpingography. Now, I wonder how this might work and if it hurts…
Thank you!
Hello Mirene,
Hysterosalpingography (HSG) is a diagnostic test to assess the condition of the fallopian tubes. This test involves taking an x-ray of the woman’s uterus and fallopian tubes. To do this, the specialist uses a type of iodized contrast that is introduced through the cervix with the help of a cannula. As the contrast fluid flows into the uterine cavity and tubes, the radiologist will take the necessary images using a special x-ray technique that allows internal organs to be seen in motion: fluoroscopy.
When undergoing HSG you might feel a slight discomfort but it doesn’t hurt. If you are interested in more information about this diagnostic technique, click here: How Is a Hysterosalpingography (HSG) Performed?
Hope this helps,
Best regards