Final answer:
In a client with idiopathic thrombocytopenic purpura, the nurse should primarily monitor for Ecchymosis, which is related to the decreased platelet count characteristic of the condition.
Step-by-step explanation:
The most appropriate manifestation for a nurse to monitor in a client with idiopathic thrombocytopenic purpura (ITP) is C. Ecchymosis.
ITP is an autoimmune disorder characterized by the body mistakenly attacking and destroying its own platelets leading to a decreased platelet count. The primary function of platelets is to help with blood clotting. Therefore, when platelet levels are low, there's an increased risk of bleeding and the appearance of ecchymoses, which are essentially larger bruise-like spots resulting from bleeding under the skin.
Other clinical manifestations that are common with ITP include petechiae and prolonged bleeding. Monitoring for signs of bleeding is crucial in managing ITP. Fatigue might also be present in the patient, but it's a non-specific symptom that could relate to numerous conditions and not as directly connected to the platelet count as ecchymosis. A. Elevated WBC and B. Fever are not directly related to ITP's pathophysiology and are therefore less relevant in the specific context of this blood disorder.