BP Chapter 7 Flashcards
Asymmetric growth is presumably caused by
decreased nutrition and oxygen
What are some causes of decreased growth potential?
Genetic and chromosomal abnormalities Intrauterine infections Teratogenic exposure Substance abuse Radiation exposure Small maternal stature Pregnancy at high altitudes Female fetus
What are some maternal factors that cause IUGR? placental?
Maternal factors including hypertension, anemia, chronic renal disease, malnutrition, and severe diabetes
Placental factors including placenta previa, chronic abruption, placental infarction, multiple gestations
Anytime a fundal height is ___ less than expected, fetal growth should be estimated via ultrasound.
3 cm
Patients with a history of pla- cental insufficiency, preeclampsia, collagen vascular disorders, or vascular disease are often treated with…
low dose aspirin
LGA infants are at increased risk of…
shoulder dystocia birth trauma with resultant brachial plexus injuries with vaginal deliveries low Apgar scores hypoglycemia polycythemia hypocalcemia jaundice childhood leukemia Wilms tumor osteosarcoma
What are the RFs for a LGA infant?
Diabetes Maternal obesity Postterm pregnancy Previous LGA or macrosomic infant Maternal stature Multiparity AMA Male infant Beckwith-Wiedemann syndrome (pancreatic islet cell hyperplasia)
what levels are considered oligo or poly hydramnios?
An AFI of less than 5 is considered oligohydramnios. An AFI greater than 20 or 25 is used to diagnose polyhydramnios, de- pending on gestational age
MC cause of oligo is ROM
increased risk of cord prolapse with poly
what test helps you determine how to dose Rho gam?
Kleihauer-Betke
what titer level is associated with hydrops?
1:16
