PAEA OBGYN EOR- Pregnancy and Prenatal Exam With Highest Rated Test Bank When is BhCG first detectable? - ANSWER-8-9d after ovulation
false negatives for bhcg - ANSWER-herephilic ab (urine would be negative)
false positives for beta hcg - ANSWER-exogenous hcg, renal failure w/ failed hcg clearance, pituitary hcg, tumors
value of hcg for home pregnancy tests - ANSWER-12.3
UPT sensitivity - ANSWER-1-2wk (20-50 mIu)
serum PT sensitivity - ANSWER-more sensitive than UPT (1-2 mIU)
gestational sac on TVUS - ANSWER-4-5wk, small anechoic fluid w/i endometrial cavity
yolk sac on TVUS - ANSWER-5-6wk, bright echogenic ring w/ anechoic center
fetal pole/embryo on TVUS - ANSWER-6wk
Crown rump length - ANSWER-used up to 12wk to predict due date, accurate w/i 4d
cardiac activity on TVUS - ANSWER-8wk
TVUS discriminatory zone - ANSWER-2000 mIU/mL
Primigravida quickening - ANSWER-20wk
Multigravida quickening - ANSWER-16-18wk
Rhogam dose - ANSWER-0.3mg eradicates 15mL of fetal RBC
when is Rhogam given - ANSWER-bleeding or trauma prior to 28wk, PP if infant Rh +, invasive diagnostic prenatal test, 28wks GA
HSV + prophylaxis - ANSWER-acyclovir at 36wk
When is anatomy US obtained - ANSWER-18-22wk
iodine in pregnancy - ANSWER-too little= hypothyroidism, too much= fetal goiter Vitamin D in pregnancy - ANSWER-low a/w small for GA infant, supp. if limited exposure to sunlight
Vitamin A in pregnancy - ANSWER-limit <5000 IU/d
Calcium in pregnancy - ANSWER-reduces risk of developing HTN d/o. 1000-1300 mg/d in pts with high risk for gestational HTN or communities w/ low dietary Ca intake
Sleep in preganncy - ANSWER-dont sleep supine, sleep on side in 3rd tri to increase fetal blood supply
Folic acid in pregnancy - ANSWER-prevents neural tube defects. 400mcg, 4mg if h/o neural tube defect (4000mcg)
weight gain in obese women - ANSWER-12-20lb
Normal weight gain in pregnancy - ANSWER-25-35lb
underweight weight gain in pregnancy - ANSWER-28-40
air travel in pregnancy - ANSWER-can fly up to 36wk
caffeine in pregnancy - ANSWER->5c can increase abortion, limit to <200mg (10oz)
exercise in pregnancy - ANSWER-moderate intensity activity for 30min+/day, dont lift >25lb. avoid high risk falling or trauma and scuba
benefits of breastfeeding - ANSWER-protects against rotavirus, decreased atopic dermatitis and resp infx, contains protective immunological substances (IgA and GF)
c/i to breastfeeding - ANSWER-galactosemia, street drugs, uncontrolled alcohol, HIV, active TB, active herpes on breast, meds, breast CA tx, active varicella 5d before delivery or 2d after, H1N1 influenza (until afebrile)
prenatal visit frequency until 28wk - ANSWER-1x/mo (q4wk)
prenatal visit frequency 28-36wk - ANSWER-2x/mo (q2wk)
prenatal visit frequency 36-delivery - ANSWER-weekly
when is fetal HR audible on doppler - ANSWER-12 wk GA
when is fetal position palpable - ANSWER-36wk
initial prenatal visit - ANSWER-6ws after LMP, by 10wks
how long does N/V in pregnancy last - ANSWER-1st tri, until 16wk N/V in pregnancy tx - ANSWER-1. pyridoxine (vit B6) +/- doxylamine, 2. add antihistamine or 5HT3 antagonist (diphenhydramine, meclizine, dimendydrinate), 3. methylprednisolone or chlorpromazine
Hyperemesis gravidum metabolic derangement - ANSWER-hypokalemic, hypochloremic metabolic alkalosis
GBS swab weeks - ANSWER-36-37wk
Tx of GBS in labor - ANSWER-PCN (allergy: clinda, erythromycin), Vanco if no sensitivites
prolonged rupture - ANSWER->18hr, GBS prophylaxis
SE of prostaglandins (Cervidil, Cytotec) - ANSWER-tachysystole, uterine rupture, fever, V/D
c/i of prostaglandins - ANSWER-TOLAC (h/o C section), myomectomy, hysterectomy
SE of pitocin - ANSWER-tachysystole (>5 ctx in 10 min)
C/i of pitocin - ANSWER-fetal distress, hypersensitivity
epidural is placed in.. - ANSWER-L3-L4 space
c/i to epidural - ANSWER-bleeding d/o, LMWH w/i 12hr
RF for cord prolapse - ANSWER-AROM, unengaged fetal head
macrosomia definition - ANSWER->5000g or >4500 in diabetics
causes of fetal bradycardia - ANSWER-heart block, maternal hypotension
causes of fetal tachycardia - ANSWER-infection, terbutaline
accels - ANSWER->32 wk: 15x15, <32wk: 10x10
early decel - ANSWER-head compression
late decel - ANSWER-uteroplacental insufficiency
variable deceleration - ANSWER-cord compression --> tx with amniofusion
sinusoidal waveform - ANSWER-fetal anemia
