If you had an abnormal pelvic exam, or are experiencing abnormal or heavy bleeding, infertility, or post-menopausal bleeding, your doctor may prescribe a saline infusion sonogram (SIS) to find out what is causing the problem.
This specialized ultrasound allows the doctor to see clearly inside your uterus – and uterine cavity – to diagnose the issue.
What is Sonohysterography?
Saline Infusion Sonography (SIS) (also called Sonohysterography or Saline Infusion Sonogram) is a special type of sonogram or ultrasound of the uterus that provides a more in-depth evaluation of the uterine cavity.
Sonohysterography is used to determine the underlying causes of abnormal vaginal bleeding.
It is prescribed for women who experience symptoms that indicate a problem with their uterus, such as:
- Irregular bleeding
- Heavy bleeding
- Post-menopausal bleeding
- Repeat miscarriages
- Abnormal pelvic exams
SIS can be used to diagnose a number of medical conditions including:
- Uterine fibroids
- Uterine scarring
- An abnormally shaped uterus
- Uterine cancer
What to expect during your Saline Infusion Sonogram:
During this minimally invasive procedure, a sterile saline solution is injected through the cervix, via a catheter, in order to capture images of the uterus. The pairing of ultrasound technology with fluid produces a more detailed image than a sonogram alone. The appointment will take about 30 minutes.
What are the side effects?
SIS may cause temporary pain or discomfort in some patients. A slightly bloody discharge may also be noticed following the procedure. This is normal and usually goes away within 24 hours. During that time you may wear a sanitary napkin, but refrain from using tampons on the same day of your SIS.
When is the best time to schedule the procedure?
SIS should be performed during days 4-9 of your menstrual cycle for optimal results. Light bleeding will not interfere with the test. It is recommended to schedule your saline infusion sonogram after your period – but before ovulation.
Contraindications of SIS: Pregnancy & Pelvic Infections
Although SIS does not cause exposure to radiation, the procedure should be not be performed on pregnant women, or women suspected of being pregnant.
It is also contraindicated for females with active pelvic infections and/or severe bleeding.