護理師被分配照顧四名化療病患。完成查房後，護理師必須優先評估與處置哪位病患以防致死結果？

An oncology nurse is assigned to care for four clients experiencing various complications from chemotherapy. Upon completing initial rounds, which client must the nurse evaluate and manage first to prevent a potentially rapid fatal outcome?

• AA client displaying scattered distinct tiny red petechiae on their lower calves.
  雙小腿出現散在的微小紅色瘀點的病人。
• BA client reporting excruciating burning pain directly associated with severe oral mucositis.
  主訴嚴重口腔黏膜炎直接相關的劇烈灼痛感的病人。
• CA profoundly nauseous client who just forcefully vomited 300 mL of dark green bile.
  嚴重噁心，剛用力嘔吐出 300 mL 深綠色膽汁的病人。
• DA client with an absolute neutrophil count (ANC) of 400/mm³ registering a sudden temperature of 38.3°C (101°F).✓ 正解
  絕對嗜中性白血球計數 (ANC) 為 400/mm³ 且突然體溫升至 38.3°C (101°F) 的病人。