Final answer:
The nurse should instruct the client with an unsteady gait to hold the walker close to the body, move the walker first before taking a step, and maintain an upright posture while avoiding leaning forward.
Step-by-step explanation:
The nurse should include the following instructions when teaching the client with an unsteady gait how to use a walker:
- Hold the walker close to the body to maintain balance and stability.
- Move the walker first, then take a step to ensure proper placement and support.
- Keep an upright posture and avoid leaning forward to maintain stability and prevent falls.