chapter 50 ob 1st trimester complications Flashcards
most common presentation for complications
bleeding
embryo must be visualized transvaginally when MSD reaches
25mm
pregnancy failure definitively stated when
embryo is 7mm or greater without a heartbeat OR MSD is 25mm and no embryo is visible
big gestational sac with no embryo
blighted ovum
embryonic placenta, or frondosum, may become detached, resulting in formation of _______, may cause vaginal bleeding. 50% or greater fetal lose rate.
placental hematomas
Most common cause of bleeding in 1st trimester
subchorionic hemorrhage
textbook appearance of SCH
crescent moon or wedge-shaped fluid adjacent to gestational sac
strong indicators of spontaneous abortion
endometrium over 8mm, increased vascularity of endometrial complex, decreased hCG levels
most critical sign for viable pregnancy
cardiac activity in 1st trimester
fetal tachycardia
greater than 170bpm
simultaneous side by side appearance of amnion and yolk sac
double bleb sign
amnion evaluation: abnormal development is suggested when
amnions’ thickness and ecogenicity is almost/same as the yolk sac
benign form of gestational trophoblastic disease/molar pregnancy
hydatidiform
malignant form of gestational trophoblastic disease/molar pregnancy
choriocarcinoma
patients with molar pregnancy hCG levles–
dramatically elevated–100,000 IU/ml or greater