Template:BGDA Practical 14 - Abnormalities Interactive: Difference between revisions

Revision as of 16:23, 30 May 2019

Placentation Abnormalities Interactive Component

Attempt the Quiz - Placentation Abnormalities

Here are a few simple Quiz questions that relate to Placentation Abnormalities from the practical.

++Questions to be updated++

Additional Information: placenta abnormalities | ectopic pregnancy | hydatidiform mole

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 <quiz display=simple>
-{Which of the following is the most correct statement about the primitive streak:
+{Which of the following is the most common form of placental abnormality:
 |type="()"}
-- &nbsp; extends from the primitive node to the parachordal plate
+- &nbsp; placenta accreta
-- &nbsp; is a primary inducer during organogenesis
+|| Correct! About 75-78% of cases with an abnormal adherence, with absence of decidua basalis. The incidence of placenta accreta also significantly increases in women with previous cesarean section compared to those without a prior surgical delivery.
-+ &nbsp; is a site of migration of epiblast cells to form the mesoderm
+- &nbsp; placenta increta
-|| The primitive streak is a site of migration of epiblast cells to form firstly endoderm and then the mesoderm.
+|| Incorrect! About 17% of cases when the placenta attaches deep into the uterine wall and penetrates into the uterine muscle, but does not penetrate the uterine serosa. Placenta increta accounts for approximately 15-17% of all cases.
-- &nbsp; persists as the parachordal plate
++ &nbsp; placenta percreta
-- &nbsp; all of the above are correct
+|| Incorrect! About 5% of cases with placental villi penetrate myometrium and through to uterine serosa.
+- &nbsp; vasa previa
+|| Incorrect! {{Vasa previa}} (vasa praevia) placental abnormality where the fetal vessels lie within the membranes close to or crossing the inner cervical os (opening) and generally diagnosed (98%) by {{ultrasound}}.