護理師評估一位裝有胸管引流（水封瓶系統）的病人，發現水封室內出現持續性氣泡。護理師首要行動為何？
A nurse is assessing a client with a chest tube connected to a water-seal drainage system. The nurse observes continuous bubbling in the water-seal chamber. What is the nurse's priority action?
- ACheck the entire tubing system for air leaks✓ 正解檢查整個管路系統是否有漏氣
- BIncrease the suction pressure on the wall regulator增加牆壁調節器的抽吸壓力
- CEmpty the drainage collection chamber清空引流收集室
- DClamp the chest tube close to the insertion site在插入部位附近夾閉胸管
水封室內的持續性氣泡通常意味著系統發生氣體洩漏（air leak），這會嚴重影響胸腔內壓的復原並導致氣胸復發。護理師應先有系統地檢查從插管處到引流瓶的所有接頭是否有鬆脫，而非隨意夾閉胸管，因為夾閉會引起張力性氣胸的危險。
Continuous bubbling in the water-seal chamber usually indicates an air leak in the system, which seriously interferes with restoration of intrathoracic pressure and may cause pneumothorax to recur. The nurse should systematically inspect all connections from the insertion site to the drainage bottle for looseness, rather than indiscriminately clamping the chest tube, because clamping risks tension pneumothorax.
美台胸管護理標準一致，均強調禁忌夾閉胸管，但台灣臨床護理師更常會在發現漏氣後請專科醫師協助確認。