Which scenario indicates unsafe use of a stand-assist mechanical lift?

Using a stand-assist mechanical lift with a narrow base when lifting poses a significant safety risk. A narrow base can lead to instability during the lift, increasing the chance of tipping over or losing control, which can result in injury to both the patient and the caregiver. Stability is crucial when using any lift mechanism, and a wider base allows for a more secure and balanced lifting process.

In contrast, adjustable arm lengths, safety straps, and battery operation are features that can enhance the lift's usability and safety when used properly. Adjustable arms allow customization for different body types, safety straps secure the patient in place during the lift, and battery-powered lifts offer mobility without needing to be plugged into an outlet, making them more versatile in various environments. However, these features do not address the fundamental issue of stability during the lifting process, which is crucial for safe operation.