A nurse is assisting an older adult client in the hallway for the first time since admission. The client has brought a standard walker from home.To ensure the client’s safety and proper use of the walker, which of the following actions should the nurse take?

Choice A rationale
Antimicrobial dressings are typically used for wounds that are infected or at high risk of infection. A stage I pressure ulcer, which involves intact skin with non-blanchable redness, would not typically require an antimicrobial dressing.
Choice B rationale
Wet-to-dry dressings are used for mechanical debridement of wounds with necrotic tissue. A stage I pressure ulcer does not involve necrotic tissue, so this type of dressing would not be appropriate.
Choice C rationale
Transparent dressings are often used for stage I pressure ulcers. They provide a protective layer over the wound, promoting a moist environment and facilitating the healing process.
Choice D rationale

Dry, sterile dressings are typically used for wounds that need to be kept dry. A stage I pressure ulcer benefits from a moist healing environment, which can be provided by a transparent dressing.

The correct answer is Choice D

Choice A rationale: A 1-inch needle is typically used for intramuscular injections, not intradermal administration. Intradermal injections require a short, fine-gauge needle—usually ¼ to ⅝ inch in length and 25 to 27 gauge—to ensure accurate placement within the dermis. Using a longer needle increases the risk of injecting into subcutaneous tissue, which alters absorption and invalidates the test. Scientific technique demands precise needle selection based on anatomical depth and pharmacokinetics of the test substance.

Choice B rationale: A 20° angle is inappropriate for intradermal injections, which require a shallow angle of 5° to 15° to ensure deposition within the dermal layer. Angles greater than 15° risk penetrating into subcutaneous tissue, compromising test accuracy and absorption kinetics. The dermis is a narrow layer between the epidermis and subcutaneous fat, and precise angulation is critical for forming the characteristic wheal and ensuring localized immune response. Scientific technique mandates strict adherence to angle parameters.

Choice C rationale: The standard volume for a tuberculin skin test using purified protein derivative (PPD) is 0.1 mL, not 0.5 mL. Administering 0.5 mL would exceed the recommended dose, potentially causing excessive local reaction, invalid test results, and patient discomfort. The Mantoux method requires exact dosing to elicit a controlled immune response for accurate interpretation. Scientific protocol emphasizes precision in volume to maintain test validity and minimize adverse effects. Overdosing violates established guidelines.

Choice D rationale: Pinching or gently pulling the skin taut at the injection site stabilizes the dermal layer and facilitates correct needle placement. This technique ensures the needle enters at the proper angle and depth, allowing formation of a visible wheal, which confirms intradermal delivery. It also minimizes patient discomfort and prevents misplacement into deeper tissues. Scientific technique for intradermal injections prioritizes anatomical control and tactile feedback to optimize accuracy and diagnostic reliability.