This occurs when the fallopian tubes are blocked by infection or inflammation. The result is that the sperm cannot meet the egg.
The patency of the tubes is assessed by a series of procedures, namely;
- Hysterosalpingogram (using a dye and an X-ray saline);
- Hysterosonogram (using saline and an ultrasound);
- HyCoSy (using a special fluid with bubbles);
- Ultrasound Laparoscopy (putting a camera in the belly button to see the tubes);
- and Transvaginal Hydrolaparoscopy (putting a camera through the vagina to see the tubes).