A patient with idiopathic thrombocytopenic purpura (ITP) presents with heavy lochia and petechiae. As the nurse, which priority intervention would be most appropriate to prevent complications?

Monitor the patient's platelet count regularly.

Instruct the patient to take vitamin K supplements.

Administer platelet transfusions

Encourage the patient to engage in physical activity.

Administer a high dose of aspirin for pain relief.