At 22 weeks' gestation, a client is diagnosed with placenta previa. The doctor tells the client that the placenta is covering the internal cervical os. This is classified as what type of previa?
1. Partial
2. Low-lying
3. Marginal
4. Complete
4
Rationale:
1. In partial previa, the placenta only partially covers the internal os.
2. In low-lying previa, the placenta is in the lower uterine segment in close proximity to the cervix.
3. In marginal previa, the placenta just touches the edge of the internal os.
4. Complete placental previa occurs when the placenta completely covers the internal cervical os.
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