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HSG (hysterosalpingography) is an x-ray test used to view your reproductive organs. This can help diagnose why you are unable to get pregnant. HSG is done in the x-ray center of a hospital or clinic. During the procedure, a radiologist (doctor who specializes in the use of x-rays) takes images as a contrast dye flows through the uterus and fallopian tubes. The dye makes it easier to see these organs on x-rays. It can also help pinpoint the location of problems. In some cases, your healthcare provider will be present during the test. HSG usually takes less than 30 minutes. You can often go back to your normal routine within a short time.
HSG is used to diagnose problems with the fallopian tubes and uterus. These can include:
Blockage or narrowing of the fallopian tubes
Scarring of the fallopian tubes and uterus
Abnormalities in the shape and size of the fallopian tubes and uterus
Growths in the uterus
Problems with HSG are rare, but can include:
Allergic reaction to the dye
Damage to the uterus or fallopian tubes (very rare)
The procedure will be scheduled shortly after the end of your menstrual period. When you schedule your test, tell your healthcare provider if you have allergies to iodine or shellfish. You will be asked to sign a consent form, and may want to arrange for a ride home after the procedure. In some cases, you’ll be given antibiotics to take before and after the test. A day or two before the exam, your healthcare provider may ask you to:
Avoid sexual intercourse.
Stop using creams or other vaginal medications.
Take over-the-counter pain medications a few hours before the test.
You will be asked to lie on an x-ray table with your knees bent—much like a Pap test.
An instrument called a speculum is inserted into the vagina to hold it open.
The cervix may be numbed. Then a catheter (thin tube) is guided through the cervix and into the uterus. In some cases, the cervix is first dilated to widen the cervical opening.
The radiologist will position the x-ray machine over your abdomen. Then contrast dye is injected through the catheter.
The dye may stretch the uterus and tubes, causing some cramping or pain.
As the dye flows through the uterus and tubes, x-rays are taken and displayed on a monitor. You may be able to watch the progress of the dye on the monitor. You may also be asked to change positions.
It is normal for some dye to spill out of the tubes and be absorbed by the body. The rest may appear later as vaginal discharge.
If you feel lightheaded or dizzy, you can rest on the table until you’re ready to get dressed.
You will likely have a thick discharge as some of the dye drains out of the uterus. Use pads, not tampons, until the discharge is gone.
For a few hours you may feel some cramping. This can usually be relieved with over-the-counter pain medications.
You may be told not to have sexual intercourse or douche for a day or two.
After the radiologist has studied the x-rays, your healthcare provider will talk with you about the results of your HSG. This may be later the same day or during a follow-up appointment. In some cases, additional tests may be needed to look more closely at your reproductive organs. Your healthcare provider may also recommend medications or surgery to help correct a problem.
Severe or increasing pelvic pain.
Heavy vaginal bleeding (more than a pad an hour for 2 hours).
A fever over 101°F.
Foul-smelling or unusual vaginal discharge.