Nichols OB1 Flashcards Preview

Reproductive > Nichols OB1 > Flashcards

Flashcards in Nichols OB1 Deck (22):
1

Placenta

Temporary organ connecting fetus and mother providing the equivalent of respiratory and renal services

2

Chorion

Plate shaped tissue under part of the amniotic sac containing fetal blood vessels that branch into villi projecting projecting into space filled with maternal blood.

So basically, the ftal blood vessels branch into these villi which get into this pool of maternal blood. The area that these blood vessels come from is called the chorion

3

Trophoblast

outer layer of blastocyst that implants in the uterus and forms placenta

4

Decidua

outer layer of placenta that normally peels off myometrium and sheds placenta.

5

In the first trimester, the chorionic villi are covered by a double layer of cells, the inner cytotrophoblast and the outer syncytiotrophoblast. As the pregnancy moves along, these villi will include more fetal blood vessels, be ceovered by less interstitium, and have a thinner trophoblast covering

ok

6

What is the most common pathogenesis of an ectopic pregnancy?

scarring from previous infection of the tube

May also be due to adhesions from apendicitis

7

spontaneous abortion

loss before 20 weeks

8

First trimester pregnancy loss usually due to

genetics

9

Second trimester pregnancy loss due to

infection

10

Third trimester preg loss due to

vascular complications

11

Recurrent spontaneous abortion often due to

immunologic factors....especially antiphospholipid syndrome

12

Placenta Previa

implantation low in the uterus....often results in severe bleeding, may result in placental rupture, bleeding and death

13

Placenta Acreta

when the placenta attaches to the myometrium

14

Placenta Increta

Placenta penetrates myometrium

15

Placenta percreta

through uterine wall....KNOW that all of these conditions are caused by defective decidua

16

Hydatidiform mole

Abnormal gestation caused by two sperm penetrating one egg or one/two sperm penetrating an empty egg

17

Complete moles are

diploid

18

Partial moles are triploid

ok

19

Dx of hydatidiform mole

abnormally high bHCG

20

Tx of Hydatidiform mole

Dand C

21

Placental infections

TORCH
T- toxoplasma
O- other....syphillis, HIV,
R- Rubella
C- cytomegalovirus
H- Herpes

These all spread hematogenously

22

Finish....start at chorioamnionits

ok