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Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy)

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - What it is

Sono-hysterography is a special ultrasound procedure that allows the doctor to examine the inside of the uterus in greater detail compared to normal ultrasound scanning. Hystero-salpingo-foam sonography (HyFoSy) is a test for patency of the fallopian tubes and usually follows the sono-hysterography. We hope the following information will help you understand the procedure better and make your visit to the Department of Diagnostic and Interventional Imaging a pleasant one.

Why do I need Sono-hysterography/Hystero-salpingo-foam sonography (HyFoSy)?
There are many reasons why your doctor has requested for you to undergo this procedure. Some of the reasons include the need to assess your suitability to undergo IVF, to find out the cause of the abnormal findings in the uterine lining during a prior ultrasound examination, as well as the cause of abnormal bleeding.

Are there any special preparations for the test?
The test can be performed after your menses has ended, and by the tenth day of your cycle (counting from the first day of your menses). After the tenth day, the lining of your uterus usually thickens and may result in confusing findings that reduce the accuracy of the test.

If you have foul-smelling vaginal discharge, you should not undergo this procedure.

How is Sono-hysterography/Hystero-salpingo-foam sonography (HyFoSy) performed?
After cleansing the vagina, the radiologist will insert a fine tube into the uterus and an ultrasound probe into the vagina. The probe (slightly thicker than a tampon) is used to record ultrasound images. Sterile saline will then be slowly injected to fill the inside of the uterus. In a HyFoSy study, a foam liquid will be introduced after the saline solution to assess tube patency. During this time, you may feel mild cramps in the lower abdomen. After the procedure, the tube is removed and most of the fluid will be discharged through the vagina.

Are there any side effects?
Most patients recover immediately from the lower abdominal cramps when the test is completed. Occasionally, the cramps may continue for about an hour. In such instances, you will be offered a place to rest till the cramps subside. Hospital admission is seldom required.

You may have some spotting or mild vaginal bleeding for one or two days. This is normal. Severe complications are uncommon. But if you have severe bleeding, lower abdominal pain or fever, please return to the hospital, and go to the Urgent O&G Centre, located at basement 1 for treatment.

Will I need to be admitted?
The examination does not require admission. It can be performed on an outpatient basis. If you are admitted to the hospital on the appointment day, please inform the ward staff to contact the Department of Diagnostic and Interventional Imaging.

Important notes:
  1. Please call or fax for your appointment on the first day of your menstrual cycle (or the next working day). The test should be done after your menses has ended and by the tenth day.
  2. Please inform the doctor or sonographer if you are:
    • Allergic to latex (rubber), any medication or antiseptic lotions.
    • Pregnant or suspect that you are pregnant.
  3. If you have severe bleeding, lower abdominal pain, or fever after the procedure, please go to our Urgent O&G Centre, located at basement 1. Please inform the staff there that you had a Sono-hysterography/Hystero-salpingo-foam sonography (HyFoSy) procedure done.
  4. You may wish to arrange for someone to accompany you home after the procedure.
  5. Please do not carry valuables, jewellery or excessive cash with you during your appointment.
  6. Do not drive or ride a motorcycle immediately after your discharge.

* Do note that Medical Certificate (MC) for this procedure will be given upon request on the day of procedure.

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Symptoms

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - How to prevent?

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Causes and Risk Factors

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Diagnosis

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Treatments

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Preparing for surgery

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Post-surgery care

Sono-hysterography/Hystero-salpingo foam sonography (HyFoSy) - Other Information

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

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