1. The Growing Fetus

2. Objectives  Calculate Nagle’s rule  Identify some normal embryonic and fetal structures.  Define purpose of amniotic fluid.  Differentiate the name and period of time of fetal development.  Identify and explain the screening and assessing of fetal wellbeing in detail.

3. Estimated Birth Date  Nagele’s Rule April 14 – 3months + 7 days= Jan 21

4. Assessment of Fetal Growth  Health history  Estimating fetal growth

5. Embryonic and Fetal Structures  Endocrine Function  Human Chorionic Gonadotropin  Estrogen  Progesterone

6. Embryonic and Fetal Structures  Umbilical Cord  From fetal membranes  Provides circulatory pathway  contains 1 vein and 2 arteries

7.  Amniotic Membranes  Chorionic membrane

8. Embryonic and fetal structures  Amniotic Fluid Never stagnant=800-1200cc by term continually being produced and absorbed by fetus Serves to protect fetus Shields against pressure Protects from changes in temp Protects umbilical cord

9. Three stages of fetal development  Ovum 0-14 days  Embryo 15 days to 8 weeks  Fetus 9 weeks till birth

10. Assessment of Fetal Growth Assessing fetal well-being  Maternal serum alpha-fetoprotein  Triple screening  Chorionic villi sampling  Amniocentesis  Percutaneous umbilical blood

11. MSAFP

12. Chorionic Villi Sampling

13. Amniocentesis  Assessing fetal well-being  Amnioscopy  Fetoscopy  Biophysical profile

14. Percutaneous Umbilical Blood

15. Biophysical Profile

16. Placenta grading  Ultrasound is used to determine health of placenta