Obstetrics Flashcards
What does APGAR stand for?
- Apperance
- Pulse
- Frimace (reflex irritability)
- Activity
- Respiration
When is APGAR given?
1 minute after birth and again at 5 minutes
What is a normal, low, and critically low APGAR score?
- Normal: = to or greater than 7
- Low: 4-6
- Critically low: = to or less than 3
What are the APGAR categories for appearance?
- 0: blue, pale
- 1: pink body, blue extremities
- 2: pink
What are the APGAR categories for pulse?
- 0: absent
- 1: below 100 bpm
- 2: over 100 bpm
What are the APGAR categories for grimace?
- 0: floppy
- 1: minimal response to stimulation
- 2: prompt response to stimulation
What are the APGAR categories for activity?
- 0: absent
- 1: flexed arms and legs
- 2: active
What are the APGAR categories for respiration?
- 0: absent
- 2: slow and irregular
- 3: vigorous cry
What are dizygotic or fraternal twins?
- 2/3 of multiple gestations
- fertilized 2 ova by 2 different sperms
- not the same genetic material
What are monozygotic or identical twins?
- 1/3 of multiple gestations
- fertilization of 1 ova that splits
- same genetic material
How much weight can a patient gain with multiple gestations?
37-54 lbs
How are multiple gestations diagnosed?
US + elevated hCG + AFP
What are monochorionic monoamniotic (mo/mo) twins?
single placenta, one chorion, one amnion
What are monochorionic diamniotic (mo-di) twins?
Single placenta, single chorion, two sacks
What are dichorionic diamniotic (di-di) twins?
two placentae, two chorion, two sacs
What are management recommendations for multiple gestations?
- 2 prenatal vitamine with iron
- 1 mg folate and 1000 mg of vitamin D daily
- More frequent US & visits
- Sleep on the left side
What are the 7 cardinal movements of labor & delivery?
- Engagement
- Descent
- Flexion
- Internal rotation
- Extension
- External rotation
- Expulsion
What is engagement?
fetal head enters into pelvis
What is descent?
Fetal head descends into pelvis
What is flexion?
head flexes to smallest diameter to present to the pelvis
What is internal rotation?
fetal vertex rotates from the transverse position to the anterioposterior position
What is extension?
vertex extends beyond pubic symphysis
What is external rotation?
after the head is delivered, baby externally rotates to allow for babys shoulders to pass
What is stage 1 of labor?
- onset of true regular contractions until full dilation/effacement of cervix
- 10-12 hrs
- latent phase: onset until 2-4 cm dilated
- active phase: extends until >9 cm
- deceleration/transition phase: cervix completes dilation
What is stage 3 of labor?
- from delivery of infant until delivery of placenta
What is stage 2 of labor?
- time of full dilation until delivery
- 1-2 hours
- early/variable decelerations common
- passive and active phases
What are fetal stations?
a measurement of how high ot low the baby is
* -3: above ischial spines
* 0: at ischial spines
* 3: below ischial spines (time to push)
What is the first trimester screen and when is it done?
- Plasma hCG, PAPP-A, nuchal translucency
- 11-13 wks
- CVS sampling if indicated
What chromosome abnormalities does the 1st trimester sceen look for?
- Downs (21): ↑↑ NT, ↓↓ PAPP-A, ↑ hCG
- Edwards (18): ↑↑ NT, ↓↓ PAPP-A & hCG
- Pataus (13): ↑ NT, ↓↓ PAPP-A & ↓ hCG
What is the QUAD screen and when is it done?
- AFP + inhibin-A + estriol + BhCG
- 15-20 weeks
What chromosome abormalities does the QUAD screen look for?
- Downs (21): ↑ hCG & ↑ inhibin-A
- Edwards (18): ↓ estriol, ↓↓ hCG
- Pataus (13): ↑ AFP
- Turners (X/0): ↑↑ hCG & inhibin-A
What is the MCC of spontanous abortion?
chromosomal abnormalities
What is a threatened abortion?
- cervical os: closed
- POC: retained
What is an inevitable abortion?
- cervical os: open
- POC: retained
What is an incomplete abortion?
- cervical os: open
- POC: some passed
What is a complete abortion?
- cervical os: closed
- POC: completly passed
What is an ectopic pregnancy?
- implantation anywhere but the endometrium
- MC: fallopian tube
- MCC: occlusion of tube due to adhesions
- typically presents 6-8 weeks after LMP
What are risk factors for an ectopic pregnancy?
- strongest RF: previous ectopic
- hx PID, IUD
What are symptoms of an ectopic pregnancy?
Unilateral/lower abd pain + bleeding/spotting + amenorrhea
* ruptured: severe abdominal or shoulder pain (kehr sign), syncope, hypotension
How is an ectopic pregnancy diagnosed?
hCG less than expected
* > 1500 should show up on TVUS
How do you treat an ectopic pregnancy?
- hCG < 5000 without fetal activity: methotrexate
- emergent: laparoscopy
- trend BhCG until levels return to normal
How is gestational diabeties diagnosed?
GTT screening at 24-28 weeks
* 50g 1 hr glucose test: > 140
* 100g 3 hr test: fasting > 90, 1 hr > 180, 2 hr > 155, 3 hr > 140
How is gestational diabeties treated?
- Diet & exercise
- Severe: insulin
- Alt. glyburtide or metformin
- Comp.: polyhydramnios
What are symptoms of gestational trophoblastic disease?
painless vaginal bleeding, uterine size greater than gestational age, hyperemesis gravidarum, preclampsia 6-16 weeks
What is gestational trophoblastic disease?
neoplasm due to abnormal placental development with trophoblastic tissue proliferation arising from gestational tissue
* 2 types: complete (MC), partial
* complete: empty, no viable fetus
* partial: some fetal tissue + trohoblastic hyperplasia
How is gestational trophoblastic disease diagnosed?
- earilest it can be dx: 8 wks
- hCG > 100,000
- US: snowstorm pattern and grapelike vesicles
How is gestational trophoblastic disease treated?
- benign/low risk: chemo (methotrexate)
- high risk: chemo + surgery/radiation
- surgical: suction curettage/hysterectomy
- Monitor weekly hCG until return to baseline
What is cervical insufficiency?
inability of the cervix to retain a pregnancy through the 2nd trimester due to premature cervical dilation in the absense of uterine contractions
What are risk factors for cervical insufficency?
ehlers-donlos syndrome, cervical trauma during labor/delivery, cervical dilations
What are symptoms and physical exam findings of cervical insufficency?
- Sx: ASX or pelvic pressure & vaginal discharge
- PE: soft, effaced, dilated cervix with grossly prolapsed or ruptured membranes
How is cervical insufficency diagnosed?
- 2 consecutive 2nd trimester losses or early premature births
- TVUS: cervical length less than 25 mm before 24 wks
How is cervical insufficency treated?
cerclage placement at 12-14 weeks