Correct Answer: A

Rationale: The correct answer is increased blood pressure in the arms with decreased blood pressure in the legs. Coarctation of the aorta is a congenital heart defect characterized by a narrowing of the aorta, leading to increased blood pressure in the upper extremities and decreased blood pressure in the lower extremities due to decreased blood flow beyond the narrowing. Choice B is incorrect because coarctation of the aorta does not lead to increased blood pressure in the legs. Choice C is incorrect because increased blood pressure in both the arms and legs is not a typical manifestation of coarctation of the aorta. Choice D is incorrect because decreased blood pressure in both the arms and legs is not characteristic of coarctation of the aorta.

Correct Answer: C

Rationale: Plantar creases covering 2/3 of the sole is an important physical characteristic used to assess gestational age in a newborn. This finding is significant because as gestational age advances, the plantar creases cover a larger portion of the sole. It is a valuable clue to the healthcare provider in determining the newborn's maturity level. Choices A, B, and D are incorrect as they do not specifically relate to gestational age assessment. Acrocyanosis and vernix caseosa are common findings in newborns but are not directly used for determining gestational age. The softness and level of the anterior fontanel can provide information about intracranial pressure but are not directly related to gestational age assessment.

Correct Answer: A

Rationale: The correct answer is A: Perform a sharp hand clap near the infant. The Moro reflex, also known as the startle reflex, is elicited by a sudden stimuli such as a sharp hand clap near the infant. This reflex is characterized by the infant's arms extending and then flexing with a distinctive 'startle' motion. It is a normal and expected reflex in newborns, typically disappearing by 3-6 months of age. Choices B, C, and D are incorrect because they do not elicit the Moro reflex; holding the newborn vertically (choice B) or placing a finger at the base of the newborn's toes (choice C) are associated with other reflexes, while turning the newborn's head quickly to one side (choice D) is related to the tonic neck reflex.

Correct Answer: A

Rationale: The correct answer is increased blood pressure in the arms with decreased blood pressure in the legs. Coarctation of the aorta is a congenital heart defect characterized by a narrowing of the aorta, leading to increased blood pressure in the upper extremities and decreased blood pressure in the lower extremities due to decreased blood flow beyond the narrowing. Choice B is incorrect because coarctation of the aorta does not lead to increased blood pressure in the legs. Choice C is incorrect because increased blood pressure in both the arms and legs is not a typical manifestation of coarctation of the aorta. Choice D is incorrect because decreased blood pressure in both the arms and legs is not characteristic of coarctation of the aorta.

Correct Answer: B

Rationale: A surge of energy is a common sign that precedes labor. This burst of energy, often referred to as the 'nesting instinct,' is believed to occur as the body prepares for labor, prompting the individual to undertake tasks to prepare for the arrival of the baby. Decreased vaginal discharge is not a typical sign preceding labor. Urinary retention is not a sign that precedes labor and may indicate another issue. Weight gain of 0.5 to 1.5 kg is not a specific sign of impending labor.