OB Flashcards
(23 cards)
What is the first-line treatment for fetal arrhythmias?
Digoxin
What is a normal umbilical cord pH and base deficit?
pH 7.28
Base deficit 4
What is the treatment for varicella pneumonia in pregnancy?
IV acyclovir
What is the minimum amount of fetal blood that can cause Rh alloimmunization in the mother?
0.1 mL
Which valvular issue in pregnancy is highly dependent on adequate preload?
Aortic insufficiency
What are the NPV and PPV for BPP, NST, and CST?
High NPV, low PPV
What are the symptoms of postpartum blues?
anxiety, tearfulness, irritability, sadness, dysphoria, insomnia, and decreased concentration
What is the effect of pregnancy on HIV viral loads?
No effect
What is the difference between integrated screening and stepwise sequential screening for aneuploidy?
Integrated screening - undergo first and second trimester screen and receive one result.
Stepwise sequential - undergo first trimester screen and have NIPT or diagnostic testing if abnormal, if low risk, proceed with second trimester screen
How is polyhydramnios diagnosed in twin gestations?
MVP > 8 cm
What are the most common risks to the fetus with maternal Graves disease?
Low birth weight, medically indicated preterm delivery
What is the sensitivity of MSAFP for an open neural tube defect?
75%
What is the incidence of fetal post-maturity syndrome?
10-20%
What are the increased risks associated with sequential operative delivery?
Intracranial hemorrhage Subdural, subarachnoid hemorrhage Facial nerve injury Brachial plexus injury Low UA pH Anal sphincter tears
The fetal umbilical arteries branch off of which vessel?
Internal iliac
What is the risk of death in the surviving twin if one twin dies?
Monochorionic - 15%
Dichorionic - 3%
When should twin pregnancies be delivered?
Mono-mono - 32-34
Mono-di - 34-37
Di-Di - 38
What is the most common form of neonatal herpes infection?
Limited to the skin, eyes, and mouth
What is the correct location for epidural placement?
L4-L5
What is the path of the pudendal nerve?
Exits through greater sciatic foramen, hooks around ischial spine and sacrospinous ligament, then travels through the lesser sciatic foramen
What is the incidence of postpartum blues following delivery?
40-80%
What is the most common ovarian neoplasm found during pregnancy?
Mature cystic teratoma
What is an adequate contraction pattern for a CST?
At least 3 contractions lasting 40 seconds in a 10 minute period
