What are the potential complications associated with a post-term pregnancy?

Correct Answer: D

Rationale: Post-term pregnancies carry risks like macrosomia, placental insufficiency, and meconium aspiration.

Correct Answer: A

Rationale: A crescent-shaped fluid collection on a head CT scan typically represents an acute subdural hematoma. Acute subdural hematomas result from the tearing of bridging veins that lie between the dura mater and arachnoid mater layers of the meninges. This injury often occurs due to significant head trauma, such as a motor vehicle accident. As blood accumulates within the potential space between the dura and arachnoid layers, it forms a crescent-shaped collection that can compress the underlying brain tissue, leading to symptoms such as altered mental status, headache, focal neurological deficits, and signs of increased intracranial pressure. Treatment may involve surgical intervention to evacuate the hematoma and relieve the pressure on the brain.

Correct Answer: C

Rationale: Folic acid is crucial for preventing neural tube defects.

Correct Answer: A

Rationale: The characteristic presenting diameter in brow presentation is submento-vertical, with the head partially extended.

Correct Answer: B

Rationale: Corticosteroids accelerate fetal lung maturity to reduce the risk of respiratory distress syndrome.