What does a saline sonogram show before pregnancy?

What does the evidence say about saline sonogram before pregnancy?

1. The examination combines a transvaginal ultrasound with fluid passed through a small cervical catheter. The fluid separates the cavity walls so the clinician can examine the lining and outline. Ask what suspected finding led to the test and how it differs from your previous ultrasound. 1
2. A standard saline infusion may show fluid beyond the uterus without establishing which tube is open. Specialized ultrasound contrast techniques can provide a more directed tubal assessment. If the referral question is blocked tubes, confirm that the booked procedure can answer that question. 2
3. The ultrasound probe is placed in the vagina, but the imaging uses sound waves rather than X-rays. Tell the clinician about pain, difficulty with pelvic examinations, or relevant accessibility needs in advance so the service can discuss support and the examination plan. 3
4. Assessing a suspected uterine septum requires attention to both the internal and external shape of the uterus. ASRM recommends three-dimensional ultrasound, with or without saline, for this purpose. An unusual cavity outline alone may not distinguish all types of uterine shape differences. 4
5. A saline sonogram supplies images; it does not remove a polyp or obtain a tissue sample by itself. If a finding needs direct inspection, sampling, or removal, hysteroscopy may be discussed as a separate procedure. Ask what decision the imaging is intended to guide. 5

When should you plan a saline sonogram?

• Before testing, confirm pregnancy precautions and the exact imaging question.
• At the visit, ask whether the examination includes a dedicated tubal contrast study.
• Afterward, distinguish an imaging finding from a recommendation for a separate procedure.

Questions for your fertility or prenatal team