What is *Hysterosalpingographic Foam Sonography (HyFoSy)?*
HYFOSY is a test that uses transvaginal ultrasound to assess the patency of the fallopian tubes (tubal patency). This test is performed as part of a fertility evaluation. This state-of-the-art technique does not require radiological imaging and therefore does not expose the patient or her unborn baby to X-rays. Furthermore, this test is much less painful than older procedures. It is performed in close collaboration with your gynecologist and infertility specialist.
Exam Procedure
An emulsion (foam gel) is injected into the uterus under ultrasound guidance. The steps are as follows:
- Preparation of the emulsion
- Insertion and positioning of the speculum (as for a Pap smear)
- Insertion of a catheter into the cervix and removal of the speculum
- Positioning of the vaginal ultrasound probe
- Injection of a few milliliters of emulsion (foam gel) into the uterus through the catheter under ultrasound guidance. The passage of the emulsion through the fallopian tubes into the abdominal cavity demonstrates tubal patency. The emulsion appears white on the ultrasound image.
- The probe and catheter are removed; the emulsion flows out through the vagina, sometimes accompanied by a small amount of blood.
At what point in the cycle should the exam be performed?
This test should be performed before ovulation, right after your period ends. Ideally between the 7th and 10th day after the start of your period (the first day of your period = Day 0).
Precautions Before the Exam
It is important to rule out any ongoing pregnancy before beginning the exam. Similarly, the exam cannot be performed if the patient has an active vaginal or abdominal infection.
Duration of the exam and pain
This exam takes less than 30 minutes on average and is generally painless; in rare cases, it may be accompanied by cramps similar to menstrual pain.
Reliable: Results comparable to those of a hysterosalpingography.
Simple: The Exem® procedure is easy to perform.
Safe: No radiation exposure for the patient or the unborn baby.
Quick: A short exam lasting no more than 30 minutes.
Outpatient: Performed at your Echofemme center.
Reassuring: Conducted in partnership with your infertility specialist.
No risk of allergic reactions and less discomfort than other tests to assess fallopian tube patency.