A nurse is preparing a sterile field for a client who requires a sterile procedure. Which of the following actions should the nurse plan to take?

Choice A rationale: Donut-shaped cushions are contraindicated because they create a ring of high pressure that restricts blood flow to the central area. This can worsen tissue ischemia and accelerate skin breakdown.

Choice B rationale: Clients with paraplegia sitting in a chair should be repositioned every 15 minutes to relieve pressure. Frequent shifts are necessary because sitting exerts higher pressure on the ischial tuberosities than lying down.

Choice C rationale: Moisture-barrier creams are used to protect skin from incontinence or wound drainage. Nonblanchable erythema indicates a stage 1 pressure injury, which requires pressure relief rather than a topical moisture barrier.

Choice D rationale: While in bed, the standard of care is to turn and reposition the client at least every 2 hours. A 3-hour interval is too long and increases the risk of further tissue damage.

Choice A reason: Decreased BUN is not typical in preeclampsia, where renal impairment often elevates BUN due to reduced glomerular filtration. Normal or increased BUN is expected, so this finding does not align with preeclampsia’s pathophysiology, making it an incorrect expectation.
Choice B reason: Increased protein in urine (proteinuria) is a hallmark of preeclampsia, resulting from glomerular damage due to hypertension and endothelial dysfunction. This diagnostic criterion, often >300 mg/24 hours, is critical for identifying preeclampsia, making it the correct finding the nurse should expect.
Choice C reason: Increased platelet count is not associated with preeclampsia, which often causes thrombocytopenia due to endothelial activation and platelet consumption. A decreased count (<100,000/mm³) is more likely, making this finding incorrect for preeclampsia’s clinical presentation.
Choice D reason: Decreased serum uric acid is not expected in preeclampsia, where elevated uric acid occurs due to reduced renal clearance from glomerular dysfunction. Increased levels are a marker, so this finding is opposite to preeclampsia’s effects, making it incorrect.