What is an important personal preparedness measure for a nurse assigned to a mass casualty situation?

An important personal preparedness measure for a nurse assigned to a mass casualty situation is carrying lip balm. This choice, while it may seem minor compared to more substantial tools, emphasizes the need for self-care and maintaining personal comfort during stressful and potentially prolonged situations. In chaotic environments, nurses can be on the frontlines for extended hours, where environmental factors such as sun exposure, wind, or dryness can affect their well-being. Maintaining personal comfort can help ensure that healthcare providers remain focused and effective in delivering care.

The other choices, while they serve various purposes, do not directly address immediate personal needs in a disaster situation. A first aid manual may be a helpful resource, but it doesn't contribute to the personal preparedness of the nurse in terms of comfort and self-care. A personal flotation device would be relevant only in specific scenarios involving water but isn't a general necessity in most mass casualty situations. Lists of credit card numbers have no direct relevance to immediate preparedness or safety in a disaster context. Thus, prioritizing personal essentials like lip balm can contribute to maintaining a nurse's capacity to help others effectively.