Can ultrasound impact embryo?

Ultrasound is a prenatal test that uses sound waves to show a picture of the baby in the uterus. It is widely considered to be safe and is used to check on the baby's health and development. However, like almost any medical procedure, its performance carries some risks. The general belief is that diagnostic ultrasound (DUS) does not pose any risk to the pregnant patient nor to her fetus. Nonetheless, some studies suggest that prolonged exposure to ultrasound waves can damage neurological, immunological, and hematological systems, as well as the genetic code of the fetus. Although biologic effects have been described in animal models, there is no evidence that these occur in humans. Nevertheless, ultrasound involves exposure to a form of energy, so there is the potential to initiate biological effects. Some of these might, under certain circumstances, be detrimental to the developing fetus. Therefore, the uncontrolled use of ultrasound without medical benefit should be avoided. Repeated prenatal ultrasound imaging and Doppler flow examinations should be restricted to those women to whom the information is likely to be of clinical benefit. In summary, while ultrasound is generally considered safe, it is important to use it only when medically necessary and under the supervision of a trained healthcare provider.
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