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