What should you do first upon finding a severely obese patient in pain on the floor?

Requesting additional personnel for assistance is the most appropriate first action upon finding a severely obese patient in pain on the floor. The patient's weight can pose significant challenges for a single rescuer, both in terms of safely lifting and moving them without risking injury to themselves or the patient. In cases of obesity, the mechanics of lifting and moving become much more complex, and having additional personnel ensures that the lift can be conducted safely and effectively, adhering to proper lifting techniques.

Moreover, additional personnel can provide necessary support during the move, potentially helping to stabilize the patient and ensuring compliance with safety measures. This collective approach not only minimizes the risk of injury but also enhances the overall care provided to the patient while ensuring their dignity and comfort.

In contrast, other options like attempting to lift alone would increase the potential for injury. Transporting the patient without ensuring safe lifting can also lead to complications or further harm. Taking vital signs is critical, but it should not be prioritized over proper management of the situation, which includes safely moving the patient with the right resources. Thus, enlisting the help of additional personnel is the best first step in ensuring both the caregiver's and the patient's safety.