Correct Answer: B

Rationale: Progesterone causes relaxation of the smooth muscles in the body, including the cardiac sphincter. This allows stomach acid to reflux into the esophagus, causing heartburn, especially during pregnancy.

Correct Answer: B

Rationale: Caput succedaneum is swelling of the soft tissues of the head that crosses suture lines, often resulting from pressure during delivery, especially with vacuum extraction.

Correct Answer: C

Rationale: In cases of respiratory distress, the nurse should first suction the newborn's airway to clear any obstructions. This is a non-invasive procedure that can quickly improve breathing.

Correct Answer: C

Rationale: A bilirubin level of 4 mg/dL is elevated for a newborn and requires monitoring and potential intervention to prevent complications such as jaundice and kernicterus.

Correct Answer: B

Rationale: Variable decelerations are often caused by umbilical cord compression. Repositioning the client can help alleviate pressure on the cord and improve fetal oxygenation.