Hysterosalpingo contrast sonography (HyCoSy)
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Reviewed by Miss Despina Mavridou
What is a HyCoSy?
HyCoSy, short for hysterosalpingo contrast sonography, is a type of ultrasound procedure to examine the fallopian tubes, as well as the uterus and ovaries, to check for abnormalities.
What are the benefits of a HyCoSy?
It provides a better view of the fallopian tubes than an internal ultrasound alone. It's also very safe as it doesn’t require an X-ray.
Is a HyCoSy right for me?
This procedure is suitable for those who:
- are having difficulty getting pregnant and would like to test the patency (state of being clear or blocked) of their fallopian tubes
- would like to undergo inter-uterine insemination (IUI)
- have endometriosis, pelvic infection or appendicitis.
What happens during a HyCoSy?
A HyCoSy is a transvaginal (internal) procedure that takes around half an hour:
- First you’ll have an internal ultrasound scan, so the doctor can take measurements of your uterus and ovaries. To do this, a speculum is placed in your vagina, similar to a smear test, and the ultrasound probe is inserted
- Then, guided by ultrasound, a thin tube (catheter) is passed into your womb and a small amount of saline is injected to look for any abnormalities, such as polyps or fibroids (aqua scan).
- Next, a sulphur-based dye is injected through the catheter into the womb and the fallopian tubes to examine them, also tracked using ultrasound.
Does a HyCoSy hurt?
A HyCoSy is unlikely to be painful, but you may feel some discomfort, similar to period cramps, during and for a short time afterwards, which can vary from woman to woman.
What happens after a HyCoSy?
You’ll be asked to wait a few minutes afterwards to make sure you don’t have a reaction to the dye. You’ll also need someone to drive you home afterwards in case you feel unwell.
Once you’re home, you should rest for a few hours. You may experience some light spotting, in which case you’ll need to use a sanitary towel – tampons may increase your risk of infection.
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