A nurse is providing education to a client who is scheduled for a left knee arthroplasty. Which of the following statements regarding informed consent indicates client understanding of the teaching?

Choice A reason: A single light fixture along the sidewalk provides limited illumination, insufficient for comprehensive safety. Multiple, evenly spaced lights are needed to prevent falls, especially for older adults. Inadequate lighting increases risks of trips or assaults, indicating the client’s understanding of outdoor safety is incomplete and does not fully address home safety needs.
Choice B reason: Changing smoke alarm batteries annually ensures functional alarms, reducing fire-related mortality by 50%. Regular maintenance supports early smoke detection, enabling timely evacuation or response. This action reflects a strong understanding of fire safety, a critical home safety component, making it the best indicator of the client’s safety awareness.
Choice C reason: A small area rug at the front door poses a tripping hazard, particularly for those with mobility issues. Loose rugs can lead to falls, causing injuries like fractures. This finding suggests the client does not fully understand fall prevention, a key aspect of home safety, making it an incorrect indicator of safety awareness.
Choice D reason: Securing electrical cords under furniture risks fire hazards if cords are damaged or pinched, potentially causing electrical shorts. Cords should be secured along walls or with covers to prevent tripping without compromising safety. This indicates a misunderstanding of electrical safety, increasing fire or injury risks, and is not a correct safety measure.

Choice A reason: Penicillin, an antibiotic, has no known interactions with saw palmetto, a herbal supplement used for BPH. Saw palmetto affects prostate function, not antibiotic metabolism, so this combination is safe, making it an incorrect choice for an adverse interaction.
Choice B reason: Ipratropium, used for respiratory conditions, does not interact with saw palmetto, which targets prostate health. Their mechanisms are unrelated, and no significant drug-herb interaction exists, making this medication an incorrect choice for an adverse interaction with saw palmetto.
Choice C reason: Zolpidem, a sedative, has no documented interactions with saw palmetto. Saw palmetto’s effects on prostate tissue do not influence zolpidem’s central nervous system actions, so this combination is safe, making it incorrect for an adverse interaction.
Choice D reason: Finasteride, used for BPH, may interact with saw palmetto, as both reduce prostate size via similar mechanisms (inhibiting 5-alpha-reductase). Combined use can amplify effects or cause additive side effects, making this a potential adverse interaction, thus the correct choice.