Obstetric emergencies: placenta accreta spectrum: practice question

A OBG question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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OBG · Obstetric emergencies: placenta accreta spectrum

Sample item

Which woman has the highest risk of placenta accreta?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. Placenta praevia with two previous caesarean sections

The risk of placenta accreta spectrum rises with praevia and number of previous caesarean sections (roughly 40 to 60 per cent or more with praevia and two or more scars). Diagnosis is by ultrasound and MRI. Planned caesarean hysterectomy with the placenta left in situ is the standard, ideally at a tertiary centre.

Option by option

  • A. Placenta praevia with two previous caesarean sections (correct)

    Correct. Praevia over a scar is the main risk combination.

  • B. Previous normal delivery with posterior placenta

    A posterior placenta without scars has low risk.

  • C. Grand multipara with no scar

    Absence of scars lowers the risk.

  • D. Primigravida with fundal placenta

    A fundal placenta in a primigravida with no scar has low risk.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this OBG question

What is the answer to this OBG question?

The best answer is A, Placenta praevia with two previous caesarean sections. The risk of placenta accreta spectrum rises with praevia and number of previous caesarean sections (roughly 40 to 60 per cent or more with praevia and two or more scars).

Why is "Previous normal delivery with posterior placenta" not the answer?

A posterior placenta without scars has low risk.

Why is "Grand multipara with no scar" not the answer?

Absence of scars lowers the risk.

Why is "Primigravida with fundal placenta" not the answer?

A fundal placenta in a primigravida with no scar has low risk.

What concept does this question test?

It tests Obstetric emergencies: placenta accreta spectrum in OBG. Diagnosis is by ultrasound and MRI. Planned caesarean hysterectomy with the placenta left in situ is the standard, ideally at a tertiary centre.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Obstetric emergencies: placenta accreta spectrum?

Learn management algorithms as steps: PPH, eclampsia, ectopic pregnancy. Then use the flashcards and the other OBG questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.