The Fallopian tubes are structures of the female reproductive system that connect the ovaries to the uterus. Its function consists of collecting the ovum released by the ovary, allowing meeting with the sperm and fertilization, and, finally, transporting the embryo to the uterus.
Therefore, any injury or obstruction of the Fallopian tubes that prevent their function will be a cause of female sterility.
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What is tubal factor?
As we have mentioned, the fallopian tubes must be permeable and able to move in order to carry out their function correctly, which is essential for pregnancy to occur naturally.
The tubal factor refers to alterations in the fallopian tubes that hinder or even prevent gestation. This type of alteration is an obstacle to achieving pregnancy in approximately 30% of patients with fertility problems.
Sometimes, the woman only has a unilateral tubal factor, that is, only one of the tubes is affected and the other one is healthy. In this case, a natural pregnancy can occur, although the chances of achieving it may be reduced.
When the tubal factor is bilateral, both tubes are damaged and, therefore, natural pregnancy is not possible, since the encounter between egg and sperm is impeded. Therefore, the patient with bilateral tubal involvement will generally have to resort to assisted reproduction if she wishes to become a mother.
Assisted procreation, as any other medical treatment, requires that you rely on the professionalism of the doctors and staff of the clinic you choose. Obviously, each clinic is different. Get now your Fertility Report, which will select several clinics for you out of the pool of clinics that meet our strict quality criteria. Moreover, it will offer you a comparison between the fees and conditions each clinic offers in order for you to make a well informed choice.
Causes of tubal factor
Although sometimes unknown, fallopian tube involvement may be due to different causes. Among them, we mention below the most important ones.
Pelvic infection is the most frequent cause of tubal injury. This type of infection can originate in the reproductive tract, in nearby sites such as the appendix, or by other infections, for example, tuberculosis.
The microorganisms responsible include Chlamydia trachomatis (chlamydia) and Neisseria gonorrhoeae (gonorrhea), both of which cause sexually transmitted diseases (STDs).
It is very important that women take care of their intimate hygiene on a daily basis and be careful with unprotected sex in order to avoid STDs.
If these microorganism infections are not treated properly and on time, the inflammatory process (pelvic inflammatory disease or PID) will trigger the appearance of adhesions that will affect tubal functionality.
These adhesions are formed by scar tissue that forms between the pelvic organs and can cause them to adhere to each other and lose their function.
Endometriosis is a disease in which the endometrial tissue comes out of the uterine cavity and implants in other locations such as the fallopian tubes or ovaries.
Endometriosis is therefore another disorder that can cause tubal obstructions and, in addition, pelvic adhesions that hinder the mobility of the fallopian tubes.
If you want to read more about this pathology that affects women of reproductive age, you can enter the following post: What Is Endometriosis? – Causes, Symptoms and Treatment
Hydrosalpinx is a disorder of the fallopian tubes characterized by the accumulation of fluid inside them. This causes the tube to dilate and also causes it to be obstructed. The most common cause of hydrosalpinx is previous pelvic infection.
This condition, in addition to causing tubal obstruction, can affect the pregnancy rate after in vitro fertilization (IVF), since the fluid that accumulates in the hydrosalpinx can reach the uterus and affect embryo implantation.
You can learn more about this topic in the following post: What is hydrosalpinx? - Causes, symptoms and treatment
There are other problems with the Fallopian tubes that can impair their function. These are discussed below:
- Congenital malformations of the tubes
- Pathology of immobile cilia
- Ectopic pregnancy resulting in removal of the tube (salpingectomy)
- Tubal ligation
Any alteration in the Fallopian tubes that prevents their permeability and freedom of movement is a cause of tubal factor infertility.
Diagnosis of tubal factor
In most cases, problems in the Fallopian tubes do not cause symptoms that a woman can perceive. Therefore, the tubal factor will only be diagnosed when the couple has not conceived for some time and proceeds to fertility tests.
Fallopian tube patency can be assessed by the following diagnostic tests:
- Hysterosalpingography (HSG)
- is the most important test to check the permeability of the tubes. It consists of injecting a contrast dye through the cervix to observe its trajectory towards the tubes as x-ray pictures are taken. If there is any obstruction, the contrast dye will become trapped and cause the tube to distention.
- Hysterosalpingosonography (HSSG)
- is an improved version of the previous HSG. Here, a saline solution or foaming gel is used to inject it through the cervix instead of the contrast dye. In addition, the use of x-rays is replaced by routine transvaginal ultrasound. To make the HSSG, you can use the ExEm Foam Kit..
- is a surgical intervention in which two small incisions are made under the navel and a camera is introduced that allows the tubes to be observed from the abdominal cavity, as well as their relationship with the rest of the structures of the reproductive system. It is usually done in case of suspicion of endometriosis or any adhesion that can be removed at the same time.
However, laparoscopy is usually only performed in cases of suspected endometriosis, adhesions or other abnormalities that can be surgically corrected at the same time.
Treatment of tubal factor
Treatment of fallopian tube conditions will depend on the cause of the condition.
Bacterial infections such as chlamydia should be treated with antibiotics. However, if the fallopian tubes are already damaged, drugs will not be able to solve this alteration.
On the other hand, it is also important to consider whether the tubal involvement is unilateral or bilateral.
Unilateral tubal factor
As previously mentioned, in the case of unilateral tubal factor, natural pregnancy will be possible. However, the couple may resort to assisted reproductive techniques if they have difficulties in achieving gestation.
Since in these cases only one tube is damaged, artificial insemination (AI) or IVF may be indicated in this situation. The choice of one assisted reproductive technique or another will depend on the particular situation of each woman or couple.
Bilateral tubal factor
If both fallopian tubes are affected, surgery to repair and recanalize the tubes will be possible, depending on the cause of the obstruction and its severity.
However, it may be difficult for a woman to regain fertility after tubal surgery because of its complexity. For this reason, many women with bilateral tubal factors resort to assisted reproduction to become mothers.
Specifically, the treatment that does not require any tubal functionality to achieve pregnancy is IVF.
In spite of this, in cases of hydrosalpinx, surgery to remove the damaged fallopian tube (called salpingectomy) is recommended prior to the IVF cycle. This intervention would increase gestation rates since it would prevent the flow of accumulated fluid into the uterus.
To know all the details of IVF treatment, you can access the following article: What is in vitro fertilization (IVF)? - Process, cost and success rates.
FAQs from users
After Chlamydia trachomatis infection, will tubal infertility develop?
Tubal factor is responsible for 12% to 33% of female infertility. Chlamydia infection is a fairly common STD, which can affect both men and women. It can progress to PID (pelvic inflammatory disease) and cause significant and permanent damage to a woman's reproductive system, especially the fallopian tubes, and cause fertility problems.
What is the best solution for getting pregnant with blocked Fallopian tubes?
IVF treatment is the most appropriate treatment to achieve pregnancy when the woman does not have tubal functionality. Usually, it is the technique of choice in women who have a tubal ligation done and wish to have a child. In addition, the advantage of IVF is that it also offers guarantees of success even if the male's semen is not of good quality.
Can pregnancy be achieved with a single fallopian tube?
The answer is yes. The fallopian tube is a mobile organ responsible for collecting the oocyte once it has ovulated. It is also the site where fertilization takes place (sperm and egg usually meet in the ampullary portion), the duct that connects this site with the uterus and, therefore, with the outside of the woman. The fallopian tubes also have the important function of serving as an incubator for the development of the already fertilized embryos, moving them carefully by means of their cilia to the uterus, in a journey that will last approximately 5 days.
All these functions are performed independently by the two fallopian tubes. Thus, when one of them is missing, this cadence does not affect the other one, which could even pick up oocytes from the contralateral ovary. Therefore, when one tube is missing, the patient will undoubtedly become pregnant.
What symptoms can a blocked Fallopian tube have?
Tubal obstruction usually has no symptoms as such. However, it is possible for a woman to have discomfort when the cause of the obstruction is related to endometriosis or infections. Some of these discomforts are the following:
- Abnormal vaginal discharge
- Pain when urinating
- Bleeding between periods
- Painful menstruation
Hysterosalpingography is the most important diagnostic test for tubal permeability. If you're interested in reading more about this topic, you can read on in the next post: How Is a Hysterosalpingography (HSG) Performed?.
If you're looking to have another baby, but have a tubal ligation done, you may be interested in the following article: What Are Your Chances of Pregnancy After Tubal Ligation?.
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FAQs from users: 'After Chlamydia trachomatis infection, will tubal infertility develop?', 'What is the best solution for getting pregnant with blocked Fallopian tubes?', 'Can pregnancy be achieved with a single fallopian tube?' and 'What symptoms can a blocked Fallopian tube have?'.
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