A nurse is caring for a client 4 hr following a cardiac catheterization. Which of the following actions should the nurse take?

Choice A reason: Lying flat helps prevent bleeding from the catheter insertion site, especially if the femoral artery was used. It promotes hemostasis and reduces the risk of hematoma. Choice B reason: Elevating the head of the bed may increase pressure at the insertion site and risk bleeding. Choice C reason: NPO status is not required 4 hours post-catheterization unless complications arise or sedation persists. Choice D reason: Flexing the affected leg can disrupt the clot at the insertion site and increase bleeding risk.