Practice Quiz

CPM Certified Professional Midwife

Category - Labor, Birth, and Immediate Postpartum

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When the placenta is implanted partially (or completely) in the lower uterine segment, it is called placenta previa. Which kind of placenta previa is the most dangerous type?
  1. Type 1
  2. Type 2
  3. Type 3
  4. Type 4
Explanation
Answer: B - Type 2

Type 1 (or low lying placenta previa) presents as the major part of the placenta attached to the upper segment, with only the lower margin encroaching onto the lower segment-but not upto the os. On the other hand, Type 2 (or posterior placenta previa) is the most dangerous of all types of placenta previa. Type 2 is characterized as the placenta reaching the margin of the internal os, but not covering it.
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