A nurse is providing discharge teaching for a client who requires home oxygen therapy. Which of the following statements should the nurse identify as an indication that the client needs further teaching?

Choice A rationale:

Placing the cuff bladder over the client's brachial artery is a correct action when obtaining a blood pressure reading. This choice demonstrates proper cuff placement, which is essential for an accurate measurement.

Choice B rationale:

Placing the client's arm above the level of the client's heart is an incorrect action when obtaining a blood pressure reading. The client's arm should be supported at heart level to ensure accurate measurement. This choice indicates a need for further instruction as it could lead to an artificially low blood pressure reading.

Choice C rationale:

Wrapping the blood pressure cuff snugly around the client's arm is a correct action when obtaining a blood pressure reading. This choice demonstrates proper cuff application, which is necessary for accurate results.

Choice D rationale:

Checking the instrument gauge to ensure the reading starts at zero is a correct action when obtaining a blood pressure reading. This choice reflects a proper step to verify that the equipment is calibrated correctly.

The correct answer is choice B. Necrotic subcutaneous tissue.

Choice A rationale:

Partial-thickness skin loss (Choice A) is characteristic of a stage II pressure ulcer, not a stage III ulcer. A stage II pressure ulcer involves the loss of the epidermis and possibly the dermis, resulting in a shallow open ulcer with a red-pink wound bed.

Choice B rationale:

Necrotic subcutaneous tissue is a manifestation of a stage III pressure ulcer. A stage III ulcer involves full-thickness skin loss where subcutaneous fat may be visible, but exposed bone or muscle is not yet present. Necrotic tissue in the wound bed indicates a more advanced level of tissue damage and the need for appropriate wound care to promote healing.

Choice C rationale:

Blood-filled blisters (Choice C) are not specific to pressure ulcers and are more commonly associated with friction or shear forces. These blisters are not indicative of a stage III pressure ulcer, which involves visible full-thickness tissue loss.

Choice D rationale:

Exposed bone (Choice D) is a characteristic of a stage IV pressure ulcer, not a stage III ulcer. A stage IV ulcer involves extensive tissue loss with exposure of muscle, tendon, or bone. This represents a severe level of tissue damage and requires intensive wound care and management.