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Flashcards in Obstetrics Deck (30)
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1

Fundal height formula

umbilicus-20wks+2-3cm/week

2

Fetal heart via doppler, quickening

Fetal heart: 10-12wk
Quickening: 17-18wks

3

Quad screen for Trisomy 18, 21 (MSAFP, Estriol, Inhibin A, BHCG)

Trisomy 18: all low
Trisomy 21: MSAFP/Estriol low; inhibin A, Bhcg high

4

Causes fetal renal tubular dysplasia, neonatal renal failure, oligohydramnios, IUGR, lack cranial ossification in fetus

ACEi

5

Causes neural tube defects, fingernail hypoplasia, microcephaly, developmental delay, IUGR in fetus

Carbamazepine

6

Causes bowel atresia, malformation heart, limbs, face, GU; microcephaly, IUGR, cerebral infarct in fetus

cocaine

7

Causes ebstein anomaly in fetus

Li

8

Causes cerebral atrophy, microcephaly, mental retardation, spasticity, seizures, blindness in fetus

Mercury

9

Causes IUGR, mental retardation, microcephaly, dysmorphic craniofacial, cardiac defects, fingernail hypoplasia in fetus

Phenytoin

10

Causes hearing loss, CNVIII damage in fetus

streptomycin, kanamycin

11

Causes cleft lip or palate, cardiac defects, microcephaly, mental retardation in fetus

Trimethadione

12

Causes neural tube defects, minor craniofacial defects in fetus

valproic acid

13

Causes nasal hypoplasia, stippled bone epiphyses, delayed delay, IUGR

warfarin

14

causes inc SAB, microtia, thymic agenesis, CV defects, craniofacial dysmorphism, cleft lip, cleft palate, mental retardation in fetus

Vit A

15

Causes hydrocephalus, intracranial calcifications, chorioretinitis, ring-enhanced lesion on MRI in fetus: dx and tx

Toxo
Tx with pyramethamine and sulfadiazine
spiramycin ppx in 3rd trimester

16

Causes cataracts, purpuric rash, mental retardation, hearing longs, PDA: dx and prevention

Rubella
immunize before pregnancy

17

Causes petechial rash, periventricular calcification in fetus: dx and tx

CMV
postpartum ganciclovir

18

Causes maculopapular rash, LAD, hepatomegaly, rhinits in fetus: dx and tx

syphilis
penicillin

19

Early decelerations

Head compressions by uterine conctraction (normal)

20

Late decelerations

Uteroplacental insufficiency and fetal hypoxemia

21

Variable decelerations

umbilical cord compression

22

Definition of reactive NST

two accelerations >15bpm for 15sec (if >32wks) in 20 min period

23

hyperemesis gravidarum: workup and tx

workup: bhcg, US to r/o molar
UA and electrolytes, LFT, bili, amylase/lipase
Tx: B6, doxylamine (antihist), promethazine or dimenhydrinate

24

Defn gestational vs pregestational HTN and tx

Gestational HTN >20wks
Tx: methyldopa, labetalol, nifedipine
Dont give: ACEIs or diuretic

25

Signs Mg toxicity and tx

Signs: loss DTRs, resp paralysis, coma
Tx: Ca gluconate

26

painful dark vaginal bleeding vs painless bright red bleeding: dx and tx

painful dark: placental abruption; if severe immediate delivery
painless red: placenta previa; do not perform vaginal exam; c-section if >36wks, in labor, fetal distress, lung maturity

27

complete vs incomplete molar pregnancy: karyotype, presence fetal tissue

complete: 46XX, no fetal tissue, high risk choriocarcinoma
Incomplte: 69XXY, contains fetal tissue

28

Tx PPROM

>34wks: consider labor induction
Abx
Antenatal steroids x48h if

29

abd pain and picket fence fever postpartum: dx and tx

septic pelvic thrombophlebitis
broad-spectrum abx and anticoag with heparin 7-10d

30

Abx for endometritis

clindamycin and gentamicin until afberile for 48h
add ampicillin for complicated cases