Saline Infusion Sonohysterography

A saline infusion sonohysterogram (SIS)  is an ultrasound procedure performed for women with unexplained infertility, recurrent miscarriage, postmenopausal bleeding, or suspected anatomical abnormalities of the uterus. SIS allows for a clearer view of the lining (endometrium) of uterine cavity. This procedure is used to identify uterine pathology such as submucosal fibroids, endometrial polyps, and anatomical abnormalities of the uterus.During SIS, a speculum is inserted into the vagina (like during a pap test) and then a thin plastic tube is gently placed into the uterine cavity through the cervical canal.  The speculum is then removed, and the vaginal probe is inserted into the vagina.  A sterile saline solution is then slowly infused into the uterine cavity to distend the womb, allowing for the identification of endometrial abnormalities. The procedure usually takes about 30 minutes.  

On arrival at the clinic, you will be seen by the Doctor who will explain the procedure. 

There is no specific preparation required for the SIS procedure. You should have the procedure performed within the first 12 days of your menstrual cycle, and preferably within one week of your period ending.  An SIS scan cannot be carried out if you are pregnant or if you have a pelvic inflammatory disease. You must advise your referring doctor or staff at Sonacare if you have either of these conditions. 

As the SIS procedure can cause mild cramping for some women, we suggest you take panadol or nurofen one hour before the procedure. 

There are minimal risks associated with the SIS procedure and it is very safe.  There is a very small risk of infection, however, this risk is very low as this procedure is performed under sterile conditions. If you experience ongoing pelvic pain or abnormal vaginal discharge, you should call Sonacare staff or see your GP, as this may indicate a possible pelvic infection. 

Most patients feel normal after the scan. You may have some mild pelvic discomfort (like mild period pain), but this will resolve after a few minutes to an hour or so. 

A very small number of patients may have some dizziness due to the cervix being slightly irritated by the catheter. This usually passes within a few minutes and has no adverse outcome.

You will generally be well enough to drive home and resume normal activities, such as going back to work.