Final answer:
The correct action indicating an understanding of how to ambulate with a standard walker after total hip arthroplasty is 'c) Pushing the walker ahead and then stepping into it', as it helps maintain stability, balance, and a wider base of support while not overstressing the affected leg.
Step-by-step explanation:
A nurse is reinforcing teaching with an older adult client who had total hip arthroplasty (THA) about ambulating with a standard walker. The correct action by the client that indicates understanding of how to ambulate properly post-surgery would be c) Pushing the walker ahead and then stepping into it. This is because when using a walker after hip surgery, it is essential to maintain stability and balance while moving, and pushing the walker ahead to then take a step ensures that the weight is distributed evenly and the body is supported properly. This method helps prevent undue pressure on the affected leg and maintains a wider base of support.
Options a) and d) could lead to a loss of balance or additional strain on the affected leg, which is not advised post-surgery. Option b) could be precarious as leaning forward could lead to tipping over or an improper gait. Proper use of a walker also includes having the walker set at the correct height and ensuring that the person feels comfortable with it before attempting to ambulate independently.