A 3-year-old patient is diagnosed with Kawasaki disease. An intervention that is important for management of symptoms as well as prevention of complications is:

Rationale: A. Aspirin is the mainstay of treatment in Kawasaki disease. It serves two critical purposes: reducing inflammation and fever, and preventing coronary artery aneurysms by inhibiting platelet aggregation. High doses are used initially for anti-inflammatory effects, followed by lower doses for antiplatelet therapy. B. Corticosteroids may be considered in refractory cases but are not first-line therapy for all patients. C. Penicillin is not used, as Kawasaki disease is not caused by a bacterial infection. D. Acetaminophen can reduce fever and discomfort but does not prevent cardiovascular complications and is therefore not sufficient as primary therapy.