I'm not a big fan of ultrasound in general, being into energy medicine, but also check this out:
NEW YORK (Reuters Health) Sep 23 - Using ultrasound to gauge gestational age could put late-term female fetuses at risk of poor outcomes and even death, a new study from Sweden shows.
Indeed, up to a third of stillbirths among girls born post-term could be due to inaccuracies in these estimates, the researchers conclude.
Since the early 1990s, doctors have used second-trimester ultrasound measurements to determine the age of a fetus and estimate when the baby will be born, Dr. Alkistis Skalkidou of Uppsala Universitet and colleagues note in their paper, published online August 27th in Epidemiology.
But female fetuses, even at the end of the first trimester of pregnancy, are smaller than male fetuses, on average, Dr. Skalkidou and colleagues add, raising the possibility that a smaller, post-term female fetus could be misclassified as having a younger gestational age based on ultrasound measurements.
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