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Flashcards in Pregnancy Deck (83)
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1

Ovulation --> fertilization occurs in the

ampulla of the fallopian tube
-occurs within 1 day of ovulation

2

Fertilization --> implantation occurs in the

wall of the uterus
-occurs within 6 days of ovulation

3

HCG is secreted by

syncytiotrophoblasts in the placenta

4

HCG doubles every

29-53 hours (doubles every 48 hours)

5

When can HCG be detected in your blood and urine?

blood- w/in 1 week
urine- w/in 2 weeks

-HCG peaks at 8-10 weeks (around 60-90,000)

6

HCG maintains

the corpus luteum (for about 8-10 weeks), until it starts secreting progesterone

-Interacts with the LHCG receptor of the ovary and promotes the maintenance of the corpus luteum during the beginning of pregnancy. This allows the corpus luteum to secrete the hormone progesterone during the first trimester. Progesterone enriches the uterus with a thick lining of blood vessels and capillaries so that it can sustain the growing fetus.

7

When is HCG elevated?

-multiples
-hydatidiform moles
-choriocarcinoma
-Down syndrome

8

When is HCG low?

-abnormal pregnancy
-Edward syndrome
-Patau syndrome

9

Pregnancy diagnosis s/s

-amenorrhea
-N/V
-breast tenderness
-urinary frequency/urgency
-fatigue
-vaginal cyanosis
-enlarged/globular uterus
-softened cervix
-HCG
-ultrasound positive

10

Can hear fetal heart tones via ultrasound by

5-6 weeks

11

Can hear fetal heart tones by doppler by

10-12 weeks

12

Fundus is above pubic symphysis by

12-15 weeks

13

Fundus is at umbilicus by

20 weeks

14

Naegele's Rule

-How to calculate estimated delivery date based on LMP

LMP + 7 days - 3 months= due date

ex: LMP was 1/11
add 7 days...1/18, now subtract 3 months= 10/18 is due date

-most clinics use pregnancy wheel

15

Naegele's Rule can only be used for

28 day cycles

16

Pregnancy lasts

40 weeks (280 days)

17

Ultrasound, during 1st trimester there will be _______ of variation when predicting due date

1 week (most accurate bc fetus is small and entire uterus will fit into ultrasound)

18

Ultrasound, during 2nd trimester there will be _______ of variation when predicting due date

2 weeks

19

Ultrasound, during 3rd trimester there will be _______ of variation when predicting due date

3 weeks of variation

(may be 3 weeks off when trying to determine due date)

20

During transvaginal ultrasound, gestational sac can be detected at

4.5-5 weeks

21

During transvaginal ultrasound, yolk sac can be seen at

5 weeks

(yolk sac seen when sac diameter is 8 mm)

22

During transvaginal ultrasound, cardiac activity can be detected at

5.5-6 weeks

(when gestational sac diameter is 16 mm)

23

During transvaginal ultrasound, measurable crown-rump length can be taken at

6 weeks

24

First trimester

0-12 weeks

25

Second trimester

12-28 weeks

26

Third trimester

28-42 weeks

27

Fetal "viability"

24 weeks (if baby delivers at this gestation, baby can probably be resuscitated and live, will probably have disabilities)

28

Due date is

40 weeks

29

Full term is

37 weeks (delivery without complications to the baby)

30

Late preterm

34-36 weeks