Correct Answer: B

Rationale: The correct answer is B: Placental insufficiency. Prolonged pregnancy can lead to decreased placental function, resulting in inadequate oxygen and nutrients for the fetus. This can lead to complications such as intra-uterine growth restriction and fetal distress. Option A (Intra-uterine oligohydramnios) is a consequence of decreased amniotic fluid levels but not directly associated with prolonged pregnancy. Option C (Fetal post-maturity syndrome) refers to the complications seen in a post-term newborn, not maternal risks. Option D (Large for gestational age baby) is a consequence of prolonged pregnancy but does not directly impact maternal health.

Correct Answer: A

Rationale: The correct answer is A: Radiographs. Radiographs, specifically skull X-rays, are most useful in assessing for findings consistent with a history of abuse in this case. Radiographs can detect fractures, such as skull fractures or facial bone fractures, which are common in cases of physical abuse. These fractures may not always be clinically evident but can be identified on X-rays. Explanation of other choices: B: CT scan without contrast - While a CT scan can provide detailed imaging of the head, it may not be necessary in this case as the patient's neurologic examination is within normal limits. Also, radiographs are more cost-effective and can detect fractures effectively. C: MRI - MRI is not typically used as the first-line imaging modality for suspected head trauma due to its cost and time-consuming nature. Radiographs are more appropriate for initial evaluation. D: PET scan - PET scans are used to detect metabolic activity in tissues and are not typically indicated for assessing acute traumatic injuries like fractures associated with

Correct Answer: A

Rationale: The correct answer is A: Uterine rupture. This is the most significant risk associated with VBAC, where the scar from the previous cesarean section may tear during labor. This can lead to severe complications for both the mother and baby. Postpartum hemorrhage (B) and placenta previa (C) are potential risks in any pregnancy but are not specifically increased in VBAC. Therefore, the correct answer is A, as it directly relates to the unique risk of VBAC.

Correct Answer: C

Rationale: The correct answer is C: Not more than two previous caesarean section scars. This is because a trial of scar refers to a trial of labor in a woman who has had previous cesarean sections. The guideline typically recommends that a trial of scar should be considered in women with no more than two previous cesarean section scars to reduce the risk of uterine rupture. Choices A, B, and D are incorrect because the estimated fetal weight, availability of a level one hospital, and pelvis size are not specific criteria used to determine eligibility for a trial of scar.

Correct Answer: A

Rationale: The correct answer is A because Bishop's score assesses the readiness of the cervix for labor by evaluating descent (station of the fetal head), presentation (fetal position), and cervical dilatation, which are key indicators of cervical ripening and effacement. Descent shows the progress of the fetus through the birth canal, presentation indicates the fetal position for delivery, and cervical dilatation reflects the opening of the cervix for labor. Choices B, C, and D are incorrect as they do not encompass all the essential components of Bishop's score, which focuses on descent, presentation, and cervical dilatation.