Which of the following measures should a nurse take for personal preparedness in a mass casualty situation?

In a mass casualty situation, personal preparedness focuses on ensuring that the individual is equipped to handle both the immediate needs and the potential challenges that may arise. Carrying lip balm is a practical measure because it addresses a common concern in stressful environments, particularly in harsh weather conditions that can lead to chapped lips or discomfort. This small yet significant item can contribute to a nurse's overall comfort and well-being, allowing them to focus on their primary responsibilities of providing care to others without distraction.

On the other hand, while carrying extra clothes or personal medications could be seen as relevant to personal readiness, their immediate utility in a sudden and overwhelming disaster scenario may be less impactful than simple personal comfort items like lip balm. Additionally, carrying credit cards may not be as relevant in an emergency situation where access to funds or physical items may be limited due to chaos in the environment. Thus, the choice of lip balm reflects an understanding of small ways to maintain personal comfort, which can be crucial in high-stress circumstances.