Dating Methods Flashcards
(5 cards)
1
Q
What is the gestational age?
A
of days/weeks since the first day of the last menstrual period
2
Q
What is the most accurate way to date a pregnancy?
A
1st trimester US measurement of the fetal crown-rump length
3
Q
If LMP dating lies within 1 week of the US dating what is the final due date decided by?
A
LMP
4
Q
If the LMP dating and US dating differ by greater than 1 week what is the final due date decided by?
A
Crown-rump length on US
5
Q
What is Nagele Rule?
A
LMP - 3 months + 7 days = estimated day of delivery
