Video from Prof. Sherif Mohammed Zaki on YouTube
3.3.3 Describe the methods of prenatal screening and diagnosis (ultrasound, maternal serum screening, chorionic villus sampling, amniocentesis, cell-free fetal DNA) and the conditions they detect.
Why this video
It systematically covers both non-invasive screening methods (ultrasound, maternal serum screening, and cell-free fetal DNA) and invasive diagnostic techniques (amniocentesis and CVS) along with the chromosomal and structural conditions they detect.
Heads up
It includes percutaneous umbilical blood sampling (PUBS), which goes beyond the methods required by this objective.
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