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OBGYN Boards > Extra facts! > Flashcards

Extra facts! Flashcards

1
Q

What is incidence of post maturity syndrome in post-term pregnancies?

A

10-20%
- post maturity findings: decreased lanugo, decreased subQ fat, lack of vernix, oligo, meconium

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2
Q

What is preferred method of operative delivery before 34 weeks?

A

Forceps!
- vacuum contraindicated 2/2 risk cephalophematoma, retinal hemorrhage, intracranial hemorrhage

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3
Q

How do you differentiate between pituitary tumor and adrenal adenoma for Cushing’s?

A

pituitary gland secretes ACTH
- low dose dexamethasone: if normal physiology, should suppress ACTH so no more cortisol. if abusing steroids, this will suppress!
- high dose dexamethasone: used occasionally, should suppress ACTH. If NOT, then NOT a pituitary problem and its adrenal!

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4
Q

In surviving monochorion twin, what is risk of neurologic injury and death?

A

18% neurologic
15% death

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5
Q

In surviving dichorionic twin, what is risk of neurologic injury and death?

A

1% neurologic injury
3% death

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6
Q

What percent of female population has positive serology to HSV2?

A

26%

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7
Q

What are maternal and fetal risks of untreated hypothyroidism?

A

Maternal:
- SAB, preterm delivery, abruption, gHTN/preE

Fetal:
- IUFD, low birth weight, neurodevelopment delays

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8
Q

What is recommended daily intake of vitamin d in pregnancy?

A

600IU

Calcium is 1200 mg

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9
Q

What are diagnostic criteria for diabetes?

A
  • fasting BG >126
  • plasma glucose >200 after 2hr 75g gTT
  • a1c>6.5%
  • random plasma glucose >200 w/ symptoms polyuria/polydipsia
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10
Q

After delivery, when is uterus no longer palpable on abdominal exam?

A

14days

  • at 4wks, its at pre-pregnancy size (weighs less than 100g)
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11
Q

When is late-term and post-term pregnancy?

A

Late-term: 41w0d to 41w6d

Post-term: 42wks + (Incidence of 5%)

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12
Q

What is a prolonged latent phase?

A

> 20 hr in nullip and >14hr in multip

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13
Q

What is fragile X premutation and what does it cause?

A

55-200 CGG repeats
- causes premature ovarian insufficiency!

-normal fragile X is 200 repeats but no POI!

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14
Q

When is fetus MOST sensitive to effects of ionizing radiation?

A

2-4 weeks is “all or none” - either die or no effects at all!

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15
Q

Who is high risk for infective endocarditis and needs prophylaxis?

A
  • need prophylaxis for dental procedures and in labor!
  • prosthetic cardiac valve, prior IE, cardiac transplant recipient with valve regurgitation
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16
Q

In cases of placenta previa, what is risk of accreta?

A

1st CS = 3%
2nd CS = 11%
3rd CS=40%

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17
Q

What are CST results?

A

Neg: no decels
Pos: late decels after 50% or more contractions
- equivocal SUSPICOUS: intermittent late or significant variables

Equivocal REAL: decels that occur in frequent (q2min)/long contractions

  • unsatisfactory: fewer than 3 contractions in 10 min or uninterpretable tracing.
18
Q

What is the average blood flow to the uterus at term?

A

500-700 mL/min

19
Q

When do you need colostomy for bowel with injury from gyn surgery?

A

Injury to mesentery or or sigmoid

20
Q

What percent of women with recurrent HSV will have outbreak in pregnancy?

A

75%

21
Q

What are indications for a cerclage?

A

History: 1+ 2nd trimester losses from painless cervical dilation OR prior cerclage

Exam: dilated cervix in 2nd trimster

Ultrasound: singleton pregnancy w/ short cervix <24wks AND prior PTB <34wks

22
Q

When do you give meningococcal vaccine?

A

11-12

23
Q

What percent of infants with neonatal herpes with have long-term sequelae?

A

20%

24
Q

What fluid for hysteroscopy is most likely to cause hyponatremia?

A

Hypotonic fluids: 3% sorbitol and 1.5% glycine

25
Q

What is the failure rate of copper IUD?

A

0.8% for TYPICAL use or 0.6% for PERFECT use
- for mirena: 0.2%
- Depo: 3%
- OCPs 9%

26
Q

What is HPV vaccine dosing?

A

If age <15, need 2 doses 6-12 mo apart

27
Q

At what gestational age does the neural tube close?

A

6 weeks
- forms starting at 3 wks

28
Q

The uterus receives what percent of cardiac output at term?

A

17%

29
Q

What is the maximum dose of lidocaine WITH and WITHOUT epinephrine?

A

WITH epi: 7 mg/kg
WITHOUT epi: 4mg/kg

  • earliest signs of lidocaine toxicity: circumoral numbness (tingling around mouth)
30
Q

What are side effects of pre-sacral neurectomy?

A

constipation and urinary retention

31
Q

What is the baseline prevalence of fetal neural tube defects?

A

5 per 10,000 live births, still births, terminations

  • risk in baby when one parent affected by neural tube defect is 4.5% and if both parents affected, 30%!
32
Q

What are the Rome criteria for IBS?

A

Abdominal pain at least 1 day per week with 2 of the following:
- improvement w/ defecation
- assoc w/ change in stool frequency
- assoc w/ change in stool form

33
Q

What are the skin layers below the arcuate line?

A

Skin, Camper’s fascia, Scarpa’s fascia, anterior rectus sheath, rectus abdominus, transversalis fascia, peritoneum

34
Q

What is incidence of TTTS in mono-di twin pregnancy?

A

10-15%

35
Q

How is vaginal cancer staged?

A

CLINICALLY

  • new recommendations allow CERVICAL cancer to use imaging in staging
36
Q

Risk of diabetes in women with PCOS over 30?

A

12%

risk of glucose intolerance is 40%

37
Q

When do you use outlet forceps?

A
  • scalp visible at introitus without separating labia
    -fetal skull reached the pelvic floor
  • rotation less than 45 degrees
38
Q

When should ovulation occur after positive result on LH predictor kit?

A

14-26 hours!

39
Q

When do fetal RBC appear?

A

7 weeks

40
Q

What is the most common cause of death following a uterine artery embolization?

A

Septicemia

OBGYN Boards (30 decks)

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