Which of the following assessments are critical to monitor for improvement in a patient diagnosed with idiopathic thrombocytopenic purpura (ITP)? Select All that Apply

Rationale: A. Epistaxis, or nosebleeds, is a manifestation of ongoing bleeding due to low platelet counts. While mild bleeding may be expected in ITP, its presence does not indicate improvement. Clinicians monitor for a reduction or cessation of bleeding episodes as a sign of recovery. B. Iron levels are not a primary measure of ITP improvement. Although chronic bleeding in ITP can eventually lead to iron deficiency, a change in iron does not reflect platelet recovery or improved hemostasis. Monitoring iron may be part of supportive care but is not an indicator of treatment success. C. Platelet count is the most objective measure of recovery in ITP. Normal platelet levels indicate that the immune-mediated destruction of platelets has diminished or that treatment has successfully stimulated platelet production. Achieving a count above 150,000/mm³ signifies a return to effective hemostasis, reducing the risk of spontaneous bleeding. D. Petechiae are small, pinpoint hemorrhages on the skin caused by low platelet counts. A decrease in petechiae is a visible, clinical sign that bleeding tendencies are resolving and indicates improved platelet function. This complements laboratory monitoring by providing a real-time, observable measure of patient improvement. E. Persistent bruising reflects ongoing thrombocytopenia and bleeding risk. If bruising does not improve, it suggests that treatment has not yet been effective, and further evaluation or therapy adjustments may be necessary.