Correct Answer: C

Rationale: Warfarin is a medication commonly used as a blood thinner to prevent blood clot formation. It works by inhibiting the clotting factors in the blood, thereby reducing the risk of clot formation and helping in the management of conditions like congestive heart failure and arrhythmias. Choices A, B, and D are antibiotics and do not have blood-thinning properties like Warfarin.

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: 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.

Correct Answer: D

Rationale: When a child is suffering from diarrhea, it is essential to continue breastfeeding day and night to maintain hydration and provide necessary nutrients. Stopping formula milk for 6 hours (choice B) is not the recommended approach as it may lead to a lack of essential nutrients during this critical time. Giving breast milk together with oral rehydration salts (choice C) can help replenish lost fluids and electrolytes, making it a suitable recommendation. Therefore, advising the mother to follow both options A and C is the most appropriate approach to manage the child's condition effectively.

Correct Answer: A

Rationale: The correct intervention for perineal pain in a postpartum client is the use of ice packs for the first 24 hours. Ice packs help reduce swelling and discomfort in the perineal area, especially during the initial post-delivery period. Applying heat packs can exacerbate swelling and discomfort. Avoiding peri-bottles may lead to poor perineal hygiene. Using tampons is contraindicated postpartum as it increases the risk of infection.