OB Shelf Flashcards
Plasma osmolality is ??? during pregnancy
Decreased; increasing the susceptibility to pulmonary edema
An increase in maternal blood volume has a relative dilutional effect that ??? hemoglobin and ??? MCV
Hemodilution of Pregnancy: lowers Hg and has no change in MCV
During pregnancy, circulating estrogens cause an ??? in thyroid binding globulin(TBG) and total T4
Increase
Most common sight of metastatic disease in patients with gestational trophoblastic disease/molar pregnancy
Lungs (*order CXR)
Pregnancy weight gain recs:
BMI <18 = ???, BMI 18-25 = ???, BMI 25-30 = ???, BMI 30 = ???
28-40 lbs,
25-35 lbs,
15-25 lbs,
11-20 lbs
Best screen for Downs syndrome
Sequential screen: (1st trimester = Nuchal Translucency and PAPP-A) then (2nd trimester = quad screen)
Quad screen for Downs Syndrome
Alpha FP is normal, estriol is normal, hCG is elevated, Inhibin-A is elevated
Miscarriage risk associated with CVS
1%
Risks associated with gestational diabetes:
Shoulder dystopia, fetal macrosomia, polyhydramnios, preeclampsia, neonatal hypoglycemia
Folic acid amount given 4 weeks prior to conception in non-high risk patients and high risk patients?
0.4 mg and 4 mg
Short/less intense and irregular contractions that manifest as lower abdominal pain
Braxton-Hicks contractions
Labor Warnings:
Contractions every 5 minutes for 1 hour, ROM, fetal movement <10 per 2 hours, vaginal bleeding
Test to confirm ROM?
Nitrazine test
If fetal HR or well being cant be confirmed using external methods, most reliable way to document fetal well being?
Apply fetal scalp electrode
Variable decelerations are typically caused by ??? and are the most common decelerations seen in labor.
Umbilical Cord Compression
Late decelerations are associated with ???
Uteroplacental insufficiency
Magnesium Sulfate tx for preeclampsia carries risk of ??? 2/2 Mg use
Respiratory distress
Type 1 Diabetes is associated with ??? infants, and gestational diabetes is associated with ??? Infants
Small, Large(macrosomia)
An imbalance in the blood flow through communicating vessels across a shared placenta leading to under perfusion/anemia/oligohydramnios to one twin, and over perfusion/polycythemia/polyhydramnios to the other twin
Twin-twin transfusion syndrome
Infants born to diabetic mothers are at increased risk for developing:
Polycythemia, hyperbilirubinemia, hypocalcemia, hypoglycemia, respiratory distress
HIV positive mom post-labor protocol for newborn
Tx with Zidovudine(AZT) immediately, HIV testing at 24hrs, discourage breastfeeding
Define postpartum hemorrhage for vaginal delivery and Cesarean delivery
Vag: >500 ml blood loss
Cesarean: >1000 ml blood loss
Most common cause of postpartum hemorrhage
Uterine atony
Most common cause of postpartum fever
Endometritis