What happens when we attempt duplex ultrasound imaging of the ductus venosus in a 3rd trimester pregnancy who just cant hold her breath? < br / > These images tell the story: < br / > < br / > During cessation of respiration (breath holding): < br / > < div class= " separator " style= " clear: both; text-align: center; " > < a hre..."> What happens when we attempt duplex ultrasound imaging of the ductus venosus in a 3rd trimester pregnancy who just cant hold her breath? < br / > These images tell the story: < br / > < br / > During cessation of respiration (breath holding): < br / > < div class= " separator " style= " clear: both; text-align: center; " > < a hre..." /> What happens when we attempt duplex ultrasound imaging of the ductus venosus in a 3rd trimester pregnancy who just cant hold her breath? < br / > These images tell the story: < br / > < br / > During cessation of respiration (breath holding): < br / > < div class= " separator " style= " clear: both; text-align: center; " > < a hre..." />