The procedure for performing a sonohysterogram is very simple and usually takes about 5 minutes. In order to schedule a sonohysterogram, you will need to call with the first day of your period. You will be given an appointment for some time point after the bleeding from the period has ended but before it is thought that ovulation might occur. This ensures that the uterine lining is as thin as possible. This is important since it will assist the doctor in the visualization of the cavity. The hysterosonogram is performed in the office. Using a speculum, a very thin, soft, flexible plastic catheter will be inserted through the vagina and cervix into the lower part of the uterine cavity and a balloon is inflated. The speculum is then carefully removed so as not to disturb the catheter. A vaginal ultrasound probe is then placed into the vagina. Through the catheter, a small amount of saline (sterile salt water) is injected into the uterine cavity to separate the walls.
During a sonohysterogram, the ultrasound probe can be rotated to show the long axis of the uterus or a transverse axis. In the long axis, the uterine cavity appears long and ovoid. Sometimes after the procedure, a small amount of the saline fluid may leak out of the vagina. It is also possible that the patient may experience some bleeding or spotting. It is recommended that the patient wear a light pad or tampon for the rest of the day.