Lesson 2C (Part 2) Flashcards
How long do most pregnancies last?
About 40 weeks from the LMP
- 280 days (+/- 2 weeks)
LMP
Last menstrual period
Gestation age
How far along the pregnancy is
What is considered a premature birth?
Anything before 37 weeks
How many weeks is the first trimester?
1-13 weeks
How many weeks is the second trimester?
14-26 weeks
How many weeks is the third trimester?
27 weeks till term
What is the difference between gestational are and conceptual age? (2)
- Gestational age = refers to the length of pregnancy after the first day of the LMP
- Conceptual age = is the true fetal age and refers to the length of pregnancy from the time of conception
What is the formula to find gestational age?
GA = conceptual age + 2 weeks
Conceptus period
The 3rd to the 5th weeks since LMP
Embryonic period
6th to end of 10th week since LMP
What does the embryonic period involve?
The completion of organogenesis
Organogenesis
Formation of organs
When is the pregnancy referred to as a fetus?
After organogenesis has occurred
EDD (2)
- Estimated date of delivery
2. Expected due date
EDC (2)
- Estimated date of confinement
2. Expected date of confinement
Naegeles rule
How to calculate the the due date
What are the 2 ways for Naegeles rule?
- Take the first day of LMP and add 7 days, subtract 3 months, and add one year
- Add nine months and 7 days
What is the due date if the LMP was May 5th 2018?
February 12th 2019
What is the more common way now a days to determine the due date? (2)
- Date wheel
2. Software on the US machine
