Blocked Fallopian Tubes: Causes, Diagnosis, and Treatment Options
Blocked Fallopian Tubes: Causes, Diagnosis, and Treatment
The fallopian tubes play a crucial role in natural conception — they are where the egg and sperm meet. When one or both tubes are blocked, this meeting cannot happen naturally.
What Causes Blocked Tubes?
Pelvic Inflammatory Disease (PID): The most common cause, often resulting from sexually transmitted infections like chlamydia or gonorrhoea. Even if treated, past infections can leave scar tissue.
Endometriosis: Tissue growing outside the uterus can cause adhesions that block or damage tubes.
Previous surgery: Abdominal or pelvic surgeries can create adhesions around the tubes.
Ectopic pregnancy: A previous ectopic pregnancy can damage the tube it occurred in.
Tuberculosis: Genital TB, though less common, can cause severe tubal damage — this is particularly relevant in sub-Saharan Africa.
Fibroids: Large fibroids near the tubal openings can cause obstruction.
How Are They Diagnosed?
Hysterosalpingogram (HSG): An X-ray procedure where dye is injected through the cervix to visualise the tubes. It's the most common first-line test.
Laparoscopy with dye test: A surgical procedure that allows direct visualisation of the tubes and surrounding structures.
Sonohysterography: Using ultrasound with saline to assess tubal patency.
Types of Tubal Blockage
- Proximal blockage: Near the uterus — sometimes caused by mucus plugs and may be temporary
- Mid-tubal blockage: Often from previous tubal ligation or surgery
- Distal blockage (hydrosalpinx): At the fimbriated end — fluid-filled, often requiring surgical management before IVF
Treatment Options
Tubal cannulation: For proximal blockages, a catheter can sometimes be passed through to clear the obstruction.
Laparoscopic surgery: To remove adhesions, open blocked tubes, or remove severely damaged tubes.
Salpingectomy: Removal of a damaged tube, especially hydrosalpinx, which can actually improve IVF outcomes.
IVF (In Vitro Fertilisation): Bypasses the tubes entirely. Eggs are collected from the ovaries and fertilised in the laboratory. This is often the most effective option, especially for bilateral blockage.
One Blocked Tube
If only one tube is blocked, natural conception is still possible through the open tube. Your specialist may recommend trying naturally for a period before considering other interventions.
Prevention
- Regular STI screening and prompt treatment
- Using barrier contraception to reduce infection risk
- Seeking early treatment for any pelvic pain or unusual discharge
- Completing treatment courses for infections
Hope and Options
A diagnosis of blocked tubes can feel devastating, but it's important to know that this is one of the most treatable causes of infertility. IVF has excellent success rates for tubal factor infertility, and many women go on to have healthy pregnancies.
