The Society for Maternal-Fetal Medicine (SMFM) is offering guidance on how to perform ultrasound screening for fetal microcephaly in pregnant women who have been exposed to the Zika virus.
The U.S. Centers for Disease Control and Prevention, the American College of Obstetricians and Gynecologists, and SMFM have suggested using ultrasound to measure the fetal head if the pregnant woman has been infected or potentially exposed to Zika.
However, the diagnosis of microcephaly via ultrasound can be complex, according to SMFM. As a result, the society has developed recommendations on how to interpret the findings and when to perform follow-up ultrasound. In addition, it has provided a table of values that define the lower limit of normal for each week of pregnancy.
The SMFM recommendations can be found here.
