Obstetrics Flashcards
What are the degrees of vaginal lacerations?
1st degree: Skin
2nd degree: Muscle
3rd degree: anus
4th degree: Rectum
Why do pregnant women get anemia?
Dilutional effect, RBC rises 30% but volume rises 50%
What is Vernix?
Cheesy baby skin
What is Meconium?
Green baby poop
What is Lochia?
Endometrial slough
What is normal blood loss during a vaginal delivery?
500 mL
What is normal blood loss during a C- section?
1L
How do you treat A1 Gestational DM?
Diet
How do you treat A2 Gestational DM?
Insulin
What are identical twins?
Egg split into perfect halves “monochorionic”
What are fraternal twins?
Multiple eggs fertilized by different sperm
What is ovarian hyperstimulation syndrome?
Weight gain and enlarged ovaries after clomiphene use
Who makes the trophoblast?
Baby
Who makes the cytrophoblast?
Mom=> GnRH, CRH, TRH, Inhibin
Who makes the Syncitotrophoblast?
Mom and baby => HCG, HPL
When does implantation occur?
1 week after fertilization
When is B-HCG found in urine?
2 weeks after fertilization
What is the function of Estrogen?
Muscle relaxant, constipation , ^protein production, irritability, varicose veins
What is the function of Progesterone?
^ appetite, ^acne, dilutional anemia, quiescent uterus, pica, hypo TN, melasma
What makes progesterone <10wk old?
Corpus luteum
What makes progesterone > 10 wk old?
Placenta
What is the function of B-HCG?
Maintains corpus luteum, sensitizes TSHr => act hyperthyroid (to ^BMR)
What makes B -HCG?
Placenta
How fast should B-HCG rise?
Doubles every 2 days until 10 wks (when placenta is fully formed)
What is the function of AFP?
Regulates fetal intravascular volume
What is the function of HPL?
Blocks insulin receptors => sugar stays high (baby’s stocking up on stuff needed for the journey)
What is the function of inhibin?
Inhibits FSH=> no menstruation
What is the function of. Oxytocin?
Milk ejection, baby ejection
What is the function of Cortisol in pregnancy?
Decreases immune rejection of baby, lung maturation
What are the thyroid hormone levels during pregnancy?
^TBG => ^bound t4, normal free t4 levels
When can you first detect fetal heartones?
Week 20
When can you tell the sex of a fetus by US?
Week 16
What does an AFI <5 indicate?
Oligohydramnios (cord compression)
What does an AFI >20 indicate?
Polyhydramnios (DM)
How fast should fundal height change?
Uterus grows 1cm/wk
What is the pool test?
Fluid in vagina
What is Ferning?
Estrogen crystallizes on slide
What is nitrazine?
Shows presence of amniotic fluid
What is the risk of chorionic villus sampling?
Fetal limb defects
What is the risk of amniocentesis?
Abortion (2% risk)
What is a normal biophysical profile?
> 8
What is a biophysical profile?
“Test the Baby, MAN”
Tones of the heart Breathing Movement: BPD, HC, AC, FL AFI Non-stress test (normal = "reactive")
What pelvis types are better for vaginal delivery?
Gynecoid, anthropoid