Sonohysterogram (SHG)

What is SHG, and why is this test important?

A sonohysterogram (SHG) is a procedure which tests for defects in the lining of the uterus (from adhesions, fibroids, malformations, or polyps) which could prevent implantation and cause miscarriage.

The test is performed in the first half of the reproductive cycle (after your period has ended, but prior to ovulation - usually between cycle day 5-12) to ensure that you are not pregnant at the time of the procedure.

Does the procedure hurt?

A small catheter is placed into the lowest part of the uterus, and a small amount of sterile saline is placed. You will probably feel a cramp when the catheter is placed, and possibly some pressure later on, but it is very brief.

Please be very assured that at CT Fertility we do everything possible to perform this procedure painlessly. Some patients choose to take two Motrin or Advil one hour prior to their SHG to minimize the cramping.

Are special precautions or preparations required?

No. Except for the Motrin, other medications are rarely needed. You are welcome to bring someone with you to the procedure, but most patients come alone. You can eat prior to and after the procedure. A SHG usually takes less than ten minutes, and patients are generally discharged within ten more minutes of that and return to their normal activities of the day.

You may need to wear a sanitary pad for light bleeding or discharge, and a small amount of saline may also leak after the procedure.