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Flashcards in Pregnancy Complications Deck (62)
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1

Defn SGA

< 10%ile (can be symmetric or asymmetric)

2

Defn LGA

> 90%ile

3

Defn macrosomia

> 4500 g

4

Defn LBW

< 2500 g

5

2 types of SGA

IUGR = maternal systemic disease that causes decreased placental perfusion

low groth potential = congenital abnorlaities, teratogens, cigarettes

6

How is SGA managed

1. confirm accuracy of dating
2. serial US + umbilical artery doppler (checks underlying dz)

7

Serial US reults that differentiated IUGR vs low growth potential

IUGR = progressively falls off curve
low GP = stays small

8

What does revered diastolic flow on dopplar suggest

IUGR

9

What does low or absent diastolic flow on dopplar suggest

dec placental resitance

10

What are RF for having macrosomia baby

DM, maternal obesity, postterm preg, multiparity, advanced maternal age

11

Complications of macrosomia

birth trauma
hypoglycemia
jaundice
low apgars
childhood tumors
shoulder dystocia

12

How is LGA managed?

1. confirm accuracy of dating
2. consider IOL prior to macrosommia state

13

How is AFI calculated? Defn of oligiohydraminos and polyhydraminos

deepest pocket of amniotic fluid is found in each quadrant and added together to get AFI
AFI < 5 = oligio
AFI > 20 is poly

14

Causes of oligiohydraminos

ROM (MCC)
dec placental perfusion
dec fetal fluid prodiction
renal malformations (Potters seq)

15

Complications seen with oligiohydraminos

pulm hypoplasia
limb contractures
cord compression --> fetal asphyxiation --> death

16

oligiohydraminos + meconium in amniotic fluid, next step

anmioinfusion

17

Causes of polyhydraminos

congenital abn, diabets, Twin-Twin Transfusion Syndrome (TTTS), hydrops fetalis (edema, ascities, heart failure)

18

Complcations of polyhydraminos

cord prolapse

19

How is polyhydraminos managed

careful verification of presentation, obs for cord prolapse

20

What is erythroblastosis fetalis?

Rh- woman with Rh+ fetus, mom mans Abs to Rh factor,these cross the placenta --> hemolytic anemia in fetus --> hydrops fetalis (edema, ascities, heart failure)

21

What is the prevelance of Rh-?

15% in caucasions and lower in other races

22

When is rhogam administered

28 wks and postpartum if baby is Rh+

23

What is biggest risk with retained IUFD

DIC if fetus is left > 3 wks

24

What is the management of IUFD

deliver fetus and do autopsy to search for cause if unknonwn

25

What is defn of post term delivery

> 42 wks

26

What are complications of postterm delivery

macosomia, oligiohydraminoa, mecomium aspiration, IUFD, dysmaturity syndrome (see next card)

27

What is dysmaturity syndrome?

chronic IUGR from uteroplacental insufficiency

28

MCC post term delivery/pregnancy

inaccurate dating

29

When embryo undergoes cleavage, when does the chorion seperate and the amnion seperate?

chorion seperates day 4
amnion seperates day 8

30

When does cleavage happen to result in
Di di twins?
Mono-di-
Mono-Mono
Siamese twins?

Di di twins day 1-3
Mono-di day 4-8
Mono-Mono day 8-13
Siamese/conjoined twins day 13-15