Key points
- Ask why the study was ordered, who will explain the results, and whether repeat imaging is needed.
A closer look at your baby's heart
A fetal echocardiogram is a detailed ultrasound of the baby's heart structure, rhythm, and function, often performed at 18 to 22 weeks. Earlier studies sometimes need repeating later.
Common reasons include:
- A suspected heart abnormality or persistent rhythm problem on ultrasound.
- Diabetes that was present before pregnancy.
- A parent or sibling of the baby with congenital heart disease.
- Certain fetal genetic conditions, other structural abnormalities, or increased nuchal translucency.
- Maternal anti-Ro/SSA or anti-La/SSB antibodies, or selected high-risk exposures.
IVF may also prompt consideration, depending on your history and local specialist guidance. Gestational diabetes diagnosed later in pregnancy, with normal heart screening and no other indication, does not automatically require this test.
What the test can change
Finding a heart problem before birth helps specialists plan monitoring, delivery location, and newborn care. Ultrasound does not use ionizing radiation, but even a detailed study cannot detect every small defect or a problem that develops later. Follow-up depends on the result. American Society of Echocardiography guidance
Questions about your pregnancy? Contact Davie ObGyn in Davie, Florida, at 954-880-1010. New and established patients are welcome. This information supports your prenatal care and does not replace an individual medical assessment. For urgent symptoms, call your care team promptly; for an emergency, call 911. Do not use a routine online message for urgent symptoms.
Medically reviewed by Rahil Malik, MD, FACOG, board-certified obstetrician-gynecologist. Last reviewed: September 26, 2026. This page is general information and does not replace a visit with your doctor.