CS: abnormal placentation
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23 terms
Terms | Definitions |
|---|---|
 succinturiate placenta | 1+ accessory lobe in placental membrane. if left in uterus => severe hemorrhage |
| membranous placenta | placental membrane covered with chorionic villi. can cause hemorrhage during delivery |
| placental polyp | villi left in uterus => covered in endometrium => late postpartum hemorrhage |
| placental infarct | MC placental lesion. can be d/t fibrinoid degeneration, calcification, or occlusion of spiral artery |
| absence of umbilical artery | can be d/t congenital abnormality, growth restriction (MC), or preterm delivery |
| vasa previa | cord insertion, where fetal vessels cross internal os |
| velamentous insertion | umbilical vessels separate. common in triplets |
| cord cyst | d/t liquification of wharton jelly. no clinical significance |
| abruptio placenta | premature separation of implanted placenta. may be partial, complete, obvious, or occult |
| abruptio placenta | a/w HTN |
| abruptio placenta | tocolyis contraindicated |
| placenta previa | often no s/s, or painless vaginal bleeding |
| placenta previa | placenta located at/near cervical os. can be total, partial, margina, or low-lying |
| placenta acreta | villi attached to myometrium |
| placenta increta | villi invade myometrium |
| placenta percreta | villi penetrate through myometrium |
| placenta accreta/increta/percreta | diagnosed via MRI. may require uterine packing after delivery |
| hydatiform mole | characterized by abnormal chorionic villi |
| complete mole | no fetus, abnormal placenta |
| partial mole | some fetal development, abnormal placenta |
| complete mole | uterus large for date. a/w hyperemesis, medical complications (thyrotoxicosis, etc) |
| partial mole | uterus normal/small for date. presents like missed abortion (vaginal bleeding). rarely a/w medical complications/progression to tumor |
| hydatiform mole | no fetal heart action, HCG >100,000, early onset pre-eclampsia (HTN) |
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