Correct Answer: B

Rationale: The correct answer is B. Vitamin K is administered to newborns to prevent bleeding disorders since they have low levels of vitamin K, which is essential for blood clotting. By providing this injection, the nurse ensures that the newborn has an adequate supply of vitamin K to support proper blood clotting and prevent potential bleeding complications. Choices A, C, and D are incorrect because vitamin K's primary role in newborns is related to blood clotting and preventing bleeding, not liver function, immune system, or growth and development.

Correct Answer: B

Rationale: In this case, the child is showing signs of respiratory distress, such as nasal flaring, intercostal retractions, and an increased respiratory rate. These are indicative of an ineffective breathing pattern. The child's compromised respiratory function requires immediate attention and intervention, making 'Ineffective breathing pattern' the most appropriate nursing diagnosis. Choices A, C, and D do not address the respiratory distress the child is experiencing and are not the priority in this situation.

Correct Answer: A

Rationale: The correct answer is A: Allergy. Allergy is not an infectious cause of diarrhea. Diarrhea caused by bacteria, parasites, and viruses is due to infection, while an allergy triggers an immune response that can lead to diarrhea but is not caused by an infectious agent. Choices B, C, and D are incorrect because bacteria, parasites, and viruses are known infectious causes of diarrhea, resulting from infections by these microorganisms.

Correct Answer: C

Rationale: Grunting with nasal flaring is a concerning sign of respiratory distress in a newborn that can indicate inadequate oxygenation. This finding requires immediate intervention to ensure the newborn's respiratory status is stabilized and to prevent further complications. Prompt assessment and appropriate intervention are crucial in such cases to prevent respiratory compromise and potential deterioration. Acrocyanosis, which is bluish discoloration of the extremities, is a common finding in newborns and usually resolves on its own. A respiratory rate of 60 breaths per minute and a heart rate of 140 beats per minute are within normal ranges for a newborn and do not indicate immediate intervention is needed.

Correct Answer: C

Rationale: When assessing a newborn for jaundice, the healthcare provider should examine the face and sclera. Jaundice is often first noticeable in these areas due to the buildup of bilirubin, causing a yellowish discoloration of the skin and eyes. Examining the legs and feet (Choice A) is not the most appropriate area for identifying jaundice in newborns. Similarly, the chest and abdomen (Choice B) are not the primary areas where jaundice is usually observed. Checking the back and buttocks (Choice D) is also not as useful as examining the face and sclera when assessing for jaundice in newborns.