021915 first trimester Flashcards
peak levels of hCG occur when in pregnancy? at what level?
10 weeks gestation at about 100,000 mIU/mL
hCG binds to the same receptor as
LH
at the time of the missed menses in the case of a pregnancy, what is the hCG level?
100mIU/mL, so can be detected on urine preg test
quantitative serum hCG doubles every how many hours in normal pregnancy?
48 hours (minimum rise is 53% in 48 hrs)
with transvaginal US, at what level hCG should you be able to see the pregnancy?
1500-2000 mIU/mL (DISCRIMINATORY ZONE OF HCG)
higher hCG in 2nd trimester may be associated w
spontaneous miscarriage, growth restriction, preeclampsia, preterm delivery
by when should you see heart motion?
6 wks
when should you see normal gestational sac?
by 5 wks
spontaenous abortion/miscarriage/pregnancy loss
fetal loss before 20 wks from last menstrual period or delivery of fetus under 500 g
types of abortion/miscarriage
threatened inevitable (nonviable pregnancy) incomplete (nonviable preg) complete missed-embryonic demise, anembryonic demise
in a normal uterine pregnancy, can have pain if
corpus luteum cyst-unilateral
ligament stretch-bilateral
in ectopic pregnancy, what can you observe for hCG?
it rises by less than 66% every 48 hours
heterotopic pregnancy
co-existing intrauterine and extrauterine pregnancy (hCG will rise normally)
grape like chorionic villi
complete molar pregnancy (classic snowstorm appearance)
methotrexate useed for
ectopic pregnancy
hydatiform molar preg
choriocarcinoma
hCG that fails to increase by minimum of 53% over 48 hrs
failing intrauterine pregnancy
ectopic pregnancy