Correct Answer: B

Rationale: The correct way to prevent tinea pedis is by keeping the feet dry, especially between the toes, to decrease the risk of fungal infection. Choice A is incorrect as keeping the feet moist can promote fungal growth. Choice C is incorrect because nylon or synthetic socks can trap moisture, contributing to the growth of fungi. Choice D is incorrect as going barefoot in public, especially in areas like locker rooms, increases the risk of contracting tinea pedis.

Correct Answer: B

Rationale: The most important factor in preparing a toddler for additional surgery is their previous experience of hospitalization. This familiarity can help reduce anxiety and fear associated with the hospital environment and medical procedures. Choice A, satisfying the child's wishes, may not always be feasible or in the child's best interest during medical procedures. Choice C, preventing the child from being with strangers, may not address the core issue of preparing the child for surgery. Choice D, ensuring the child still receives parental affection, is important but may not directly address the preparation needed for surgery.

Correct Answer: B

Rationale: The correct statement regarding 2-rescuer child CPR is to compress the chest with one or two hands to a depth equal to one-half to one third the diameter of the chest. This technique ensures effective chest compressions without causing excessive damage to the chest. Choice A is incorrect because allowing the chest to fully recoil between compressions is essential to facilitate optimal blood flow during CPR. Choice C is incorrect as it describes a compression to ventilation ratio of 30:2, which is not the recommended ratio for child CPR. Choice D is incorrect as a compression to ventilation ratio of 15:2 is not standard practice for child CPR, and pauses in compressions are necessary to provide ventilations effectively.

Correct Answer: B

Rationale: The correct answer is preventing infection. In caring for a child with acute lymphoblastic leukemia (ALL), preventing infection is the priority nursing intervention. Children with ALL are immunocompromised due to the disease and its treatment, making them more susceptible to infections. Administering chemotherapy, while important, is not the priority as preventing infection takes precedence to avoid complications. Monitoring for signs of bleeding and providing nutritional support are also essential components of care for a child with ALL, but preventing infection is the priority to ensure the child's safety and well-being.

Correct Answer: A

Rationale: Administering a bronchodilator is the priority intervention for a child experiencing an acute asthma exacerbation. Bronchodilators help to dilate the airways quickly, providing immediate relief by opening up the narrowed air passages in asthma. Antihistamines are not the first-line treatment for asthma exacerbations and may not address the underlying bronchoconstriction. Corticosteroids are important for long-term control of asthma but may take longer to have an effect compared to bronchodilators. Administering oxygen is essential for hypoxemia in asthma exacerbations, but the priority is to relieve bronchoconstriction promptly with a bronchodilator.