護理師照護一位接受抗凝血治療的深層靜脈血栓（DVT）病人，下列何項發現需要立即關注？
A nurse is caring for a client with a deep vein thrombosis (DVT) who is on anticoagulant therapy. Which finding requires immediate attention?
- AClient's leg is warm and slightly swollen病人腿部溫熱且輕微腫脹。
- BClient reports mild calf pain病人主訴小腿輕微疼痛。
- CClient's INR is 2.5 (therapeutic range 2.0-3.0)病人之 INR 為 2.5（治療範圍 2.0-3.0）。
- DClient develops sudden shortness of breath and chest pain✓ 正解病人出現突發性呼吸困難與胸痛。
深層靜脈血栓（DVT）病人最致命的併發症是肺栓塞（PE）。當血栓脫落並隨著血液循環進入肺部動脈時，會導致突發性的呼吸困難、胸痛、心跳過速及血氧下降。這屬於生命危急狀況，必須立即啟動緊急評估與醫療介入。其他選項如腿部腫脹、輕微疼痛或 INR 在治療範圍內，均屬於 DVT 的常規臨床表現或治療監測指標，雖需關注但不如 PE 急迫。
The most lethal complication in a client with deep vein thrombosis (DVT) is pulmonary embolism (PE). When a thrombus dislodges and travels through the circulation to the pulmonary arteries, it can cause sudden dyspnea, chest pain, tachycardia, and decreased oxygen saturation. This is a life-threatening emergency that requires immediate assessment and medical intervention. Other options such as leg swelling, mild pain, or a therapeutic INR are routine clinical findings or monitoring parameters in DVT, which warrant attention but are not as urgent as PE.