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Obstetrics > Prenatal 1 for Day 1 > Flashcards

Prenatal 1 for Day 1 Flashcards

1
Q

At 0-28 weeks gestation, when should the next prenatal visit be?

A

in 4 weeks

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2
Q

At 28-36 weeks gestation, when should the next prenatal visit be?

A

in 2-3 weeks

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3
Q

At 36-42 weeks gestation, when should the next prenatal visit be?

A

in 1 week

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4
Q

At 42+ weeks gestation, when should the next prenatal visit be?

A

in 2-3 days

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5
Q

What is the first trimester?

A

0 weeks to 13 weeks and 6 days

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6
Q

What is the second trimester?

A

14 weeks to 27 weeks and 6 days

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7
Q

What is the third trimester?

A

28 weeks to birth

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8
Q

Define an embryo (weeks)

A

fertilization to 8 weeks

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9
Q

Define a fetus (weeks)

A

9 weeks to birth

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10
Q

When is a fetus viable?

A

at 24 weeks

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11
Q

What is considered preterm?

A

20 to 36 weeks

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12
Q

What is considered term?

A

37 to 42 weeks

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13
Q

What is normal weight gain for a pre-pregnancy BMI of < 18.5?

A

30-40 pounds

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14
Q

What is normal weight gain for a pre-pregnancy BMI of 18.5-24.9 (normal)?

A

25-35 pounds

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15
Q

What is normal weight gain for a pre-pregnancy BMI of > 25 (overweight)?

A

15-25 pounds

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16
Q

What BMI range is considered overweight?

A

25 - 29.9

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17
Q

What BMI range is considered obese?

A

> 30

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18
Q

What BMI range is Class 1 obesity?

A

30 - 34.9

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19
Q

What BMI range is Class 2 obesity?

A

35 - 39.9

20
Q

What BMI range is Class 3 obesity (AKA Morbid obesity)?

A

> 40

21
Q

What is gravidity?

A

number of pregnancies

22
Q

What is parity?

A

of pregnancies reaching 20 weeks

23
Q

What is the breakdown of parity?

A

TPAL (term, preterm, abortions/ miscarriages, living children)

24
Q

What is TPAL?

A

term, preterm, abortions/ miscarriages, living children

25
Q

Define the LMP (last menstrual period)?

A

first day of the last menstrual period

26
Q

What is Naegele’s rule for the EDD (estimated delivery date)?

A

LMP - 3 months + 7 days

assumes a 28 day cycle, with day 14 fertilization

27
Q

When is quickening (first fetal movement) felt?

A

18 weeks, for the first pregnancy

17 weeks, for subsequent pregnancies

28
Q

What is normal fetal weight at 20 weeks?

A

300 grams

29
Q

What is normal fetal weight at 20-28 weeks?

A

300 grams + 100 grams per week after 20

e.g. 500 grams at 22 weeks

30
Q

What is normal fetal weight after 28 weeks?

A

300 grams
+ 100 per week from 20-28
+ 200 per week after 28 weeks
(e.g. 1300 grams at 30 weeks)

31
Q

Define large for gestational age.

A

> the 90th percentile in weight

32
Q

Define macrosomia.

A

an estimated fetal weight (EFW) of at least 4500 grams

33
Q

What is the most common cause of macrosomia?

A

incorrect dating of EDD

34
Q

What obstetric emergency can macrosomia cause?

A

Shoulder Dystocia (difficult delivery of shoulders after the head is delivered)

35
Q

Define Preeclampsia

A

Previously normotensive, now HTN after 20 weeks AND proteinuria or end-organ dysfunction

36
Q

What are the MC symptoms of preeclampsia?

A

headache, visual disturbances, RUQ pain

37
Q

What labs should be ordered for suspected preeclampsia?

A

CBC, SMA, LFTs, LDH, urine creatinine clearance, uric acid, urine protein

38
Q

What subunits make up the MC adult hemoglobin?

A

2 alpha, 2 beta (HbA)

39
Q

What subunits make up fetal hemoglobin?

A

2 alpha, 2 gamma (HbF)

40
Q

Define elderly primigravida.

A

first pregnancy at > 34 years old.

41
Q

What vaccines are unsafe in pregnancy?

A

Live vaccines

e.g. oral polio, oral typhoid, MMR, Varicella, BCG. intranasal influenze (FluMist)

42
Q

When should an ultrasound for fetal anatomy be ordered?

A

18-20 weeks gestation.

43
Q

What labs should be ordered for the initial prenatal visit?

A

Hct, Hgb, Type & Screen, Blood Type, Hgb electrophoresis
Pap, GC/CT
Urine culture, UA, Urine drug screen
Screen: Rubella, Syphilis, HBV, HIV, TB, Cystic fibrosis

44
Q

When does the uterus leave the pelvis?

A

after 12 weeks

45
Q

When is the Quad screen performed?

A

16 weeks

46
Q

What is the Quad screen?

A

maternal serum alpha-feto protein, unconjugated Estriol, hCG, Inhibin A.

It detects risk of Down (trisomy 21), Edwards (trisomy 18) or Neural Tube Defects

Obstetrics (4 decks)

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