Maternal & Child - Ob Peds- Hesi- Nclex Updated Study Notes

Antepartum-stage of fertilization and fetal growth 47-40weeks Intrapartum- baby will DELIVER!! (Process of Delivery) Postpartum- Fertilization and Implantation Fertilization: Occurs in the upper region of the fallopian tubes within 12 hours of ovulation and 2 to 3 days of insemination, the average durations of viability for the ovum and sperm, respectively. Once the ovum is fertilized, its membrane undergoes changes that prevent the entry of other sperm. Sperm carry an X and a Y chromosome: XY is male, XX female. Implantation: The zygote propels itself down the fallopian tube, toward the uterus. Implantation in the uterine wall occurs 6 to 10 days after ovulation. Stages of Pregnancy The third through eighth weeks after conception are called the embryonic stage. The fetal period starts 9 weeks after conception and lasts through the end of gestation.Fetal Development Embryonic Stage Before week 20 is considered abortion or miscarriege Preterm 20 to 36 weeks Full term 37-40 weeks Post term 41- Week 1 Free-floating blastocyst Weeks 2 to 3 The embryo is 1.5 to 2 mm long. Lung buds appear. Blood circulation begins. The heart is tubular. The neural plate becomes the brain and spinal cord. Embryonic Stage Week 5- The embryo is 0.4