A nurse is teaching a client who is to undergo placement of a nontunneled percutaneous central venous access device. Which of the following statements should the nurse include in the teaching?

Choice A reason: Asking parents to wait outside may increase the preschooler’s anxiety, as parental presence provides comfort. Unless clinically necessary, excluding parents is not ideal, so this action is inappropriate for preparing the child, making it incorrect.
Choice B reason: Teaching deep-breathing to a preschooler is challenging due to their developmental stage, and it may not effectively reduce anxiety for a dressing change. Simpler reassurance is more suitable, so this is less effective, making it incorrect.
Choice C reason: Explaining the procedure in simple terms helps the preschooler understand what to expect, reducing fear and promoting cooperation. This developmentally appropriate approach aligns with pediatric care principles, making it the correct action for preparation.
Choice D reason: Limiting teaching to 20 minutes is impractical for a preschooler, whose attention span is short. Brief, simple explanations are more effective, and prolonged sessions may overwhelm the child, so this is incorrect for preparing them.

Choice A reason: Advising over-the-counter medications as safe is incorrect, as many, like NSAIDs, increase warfarin’s bleeding risk by inhibiting platelets or affecting liver metabolism. Warfarin’s narrow therapeutic index requires careful management to prevent hemorrhage, making broad safety claims dangerous without specific evaluation.
Choice B reason: Consulting the pharmacist identifies interactions with warfarin, a vitamin K antagonist metabolized by CYP450 enzymes. Many drugs alter warfarin’s efficacy, risking thrombosis or bleeding. Pharmacist expertise ensures safe polypharmacy, maintaining therapeutic INR levels critical for managing pulmonary emboli effectively.
Choice C reason: Recommending warfarin with other medications ignores interaction risks and timing needs. Warfarin’s absorption is unaffected by timing, but CYP450 interactions can alter INR. This advice is irrelevant to safety, missing the need for individualized regimen assessment to prevent complications in anticoagulation therapy.
Choice D reason: Cranberry juice may enhance warfarin’s effect by inhibiting CYP2C9, increasing INR and bleeding risk. Advising its use without monitoring is unsafe, as dietary factors can destabilize anticoagulation, potentially causing hemorrhage in clients with pulmonary emboli, requiring careful dietary guidance.