Which client would require the most immediate nursing intervention regarding mobility?

The elderly client who is using a walker but seems unsteady requires the most immediate nursing intervention regarding mobility due to the potential risk of falls. Unsteadiness while using a mobility aid like a walker indicates a compromised ability to maintain balance and stability, which can lead to serious injuries, particularly in older adults who may have diminished bone density or other health concerns.

In geriatric care, ensuring the safety of clients is paramount. The use of a walker suggests that this individual already has some level of mobility challenge, and any signs of instability raise immediate concern. Prompt intervention could involve assessing the client's condition, ensuring proper walker use, checking environmental hazards, and possibly providing assistance or a reevaluation of their mobility needs.

Other options, while still important, indicate less immediate risk. For instance, the woman who refuses physical therapy may need encouragement to participate in rehabilitation, but she is not currently at risk for falls. Similarly, the elderly man dozing in a chair or the middle-aged man with a limp, while they may require attention, do not present the same level of urgent safety concern as the unsteady walker. Thus, prioritizing the safety and stability of the client using a walker is critical in this scenario.