Detailed Scan Flashcards
Why do we start with an overall sagittal sweep? (5)
- Position of fetus
- Image a sag fundus and cervix picture
- Check fetal heart motion
- Check # of fetuses
- Assess for the presence of amniotic fluid
Why do we do an overall transverse sweep on the lateral aspect (including adnexa)?
Assess fibroids on uterus
Assess adnexa masses (usually arising from ovary) - corpus luteal and dermoid cysts
How do you document pathological findings?
Document in 2 planes and measure in 3 planes
Why do we examine the placenta?
To see if it is sitting to high or to low
How many cm should the lower edge of the placenta should be away from the internal os of the cervix?
2cm
How do we document the cervix length?
From the placental edge to the internal os of the cervix
What do you start with when documenting the fetus?
Whatever structures are “up”
At what level do we assess the fetal head?
High on the fetal head- where it is more round
The level of the BPD the head is more oval
What are the 3 different shapes of the head?
- Dolichocephalic- narrow
- Normal
- Brachycephalic- wide
What are the cranial images taken? (7)
- BPD, OFD, HC
- Ventricular image
- Bilateral choroid image
- Cerebellar image/measurement
- Orbital image
- Nose lip image
- Profile- looking at nasal bones
What does the BPD assess? (5)
Cavum septi pellucidi 3rd ventricle Ambiant cistern Falx cerebri Shape of the cranium
What is the upper limit ventricular atrium size?
1cm
What ventricle is assessed?
The one farthest from the transducer
What do we look at when assessing the ventricles?
Echo texture of dependent choroid
Do you assess the choroid together or independently?
Together
