Study provides reassurance to the safety of repeated ultrasound examination during pregnancy

Results of a study from Australia in this week’s issue of THE LANCET provide reassurance to the safety of repeated ultrasound examination during pregnancy.

10 years ago a randomised trial highlighted how repeated ultrasound exposure at 5 different times during pregnancy was associated with growth restrictions among new-born babies compared with children exposed to only one ultrasound examination in utero.

The current analysis provides long-term follow-up data on the growth and development of children from the original study. Physical and developmental assessments were done at 1, 2, 3, 5, and 8 years of age on children born without congenital abnormalities and from singleton pregnancies. Follow-up data were available for around 2700 children, half of whom had been exposed to repeated ultrasound, the other half to one ultrasound exposure before birth.

Physical sizes of infants were similar in the two groups from one year of age onwards. There were no significant differences indicating deleterious effects of multiple ultrasound studies at any age as measured by standard tests of childhood speech, language, behaviour, and neurological development.

Lead investigator John Newnham (University of Western Australia at King Edward Memorial Hospital, Perth) comments: “Exposure to multiple prenatal ultrasound examinations from 18 weeks’ gestation onwards might be associated with a small effect on fetal growth but is followed in childhood by growth and measures of developmental outcome similar to those in children who had received a single prenatal scan.”


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
High ambient temperatures during pregnancy can have detrimental impact on offspring health