病人的胸管水封瓶出現持續性氣泡（continuous bubbling）。護理師應如何判斷？

胸腔引流管（Chest Tube）用於引流肺部周圍積聚的空氣（氣胸 Pneumothorax）或液體（血胸 Hemothorax, 肋膜積液 Pleural Effusion）。水封瓶（Water-Seal Chamber）是胸腔引流系統的一部分，用於監測氣體或液體的流出，並防止空氣回流入肺部周圍腔。水封瓶的正常運作包含三個部分：收集室（Collection Chamber）、水封瓶（Water-Seal Chamber）和壓力控制（Suction Control Chamber）。 在水封瓶中，應觀察到兩種情況：一是當病人咳嗽、打噴嚏或呼吸時，胸膜腔內的空氣或液體被擠出，在水中產生間歇性的氣泡（Intermittent bubbling）和水位波動（Tidaling）。二是除了這些生理性反應外，水封瓶應是相對靜止的，代表空氣沒有持續回流入胸腔。 題目提到「持續性氣泡」（Continuous bubbling）出現在水封瓶中。這表示有空氣不斷地從病人胸腔或引流系統的某處進入水封瓶，並在水中產生持續冒泡的現象。這通常意味著系統內存在空氣洩漏（Air leak）。這種洩漏可能源於病人肺部持續漏氣（如肺部撕裂未癒合），或是引流系統的連接處（如胸管與接頭、接頭與水瓶）沒有密封好。 選項 A（系統中有空氣洩漏）是持續性氣泡最直接且最可能的解釋。選項 B（肺部正常擴張）通常伴隨間歇性氣泡，而非持續性。選項 D（抽吸壓力過高）會導致壓力控制室持續冒泡，而非水封瓶。選項 C（胸管阻塞）則會導致引流量減少或停止，氣泡和水位波動消失，而非持續冒泡。

A chest tube is used to drain air (pneumothorax) or fluid (hemothorax, pleural effusion) accumulated around the lung. The water-seal chamber is part of the chest drainage system, used to monitor the outflow of air or fluid and prevent air from flowing back into the pleural space. A normally functioning chest drainage system includes three components: the collection chamber, the water-seal chamber, and the suction control chamber. In the water-seal chamber, two phenomena should be observed: first, when the patient coughs, sneezes, or breathes, air or fluid in the pleural cavity is expelled, producing intermittent bubbling and fluctuation of the water level (tidaling); second, aside from these physiologic responses, the water-seal chamber should remain relatively still, indicating that air is not continuously flowing back into the thoracic cavity. The question describes continuous bubbling in the water-seal chamber. This means air is continuously entering the water-seal chamber from somewhere in the patient's chest or drainage system, creating persistent bubbling in the water. This typically indicates an air leak in the system. The leak may originate from continuous air escape at the lung itself (e.g., an unhealed lung tear) or from poor sealing at a connection point in the drainage system (e.g., between the chest tube and connector, or connector and water bottle). Option A (an air leak in the system) is the most direct and likely explanation for continuous bubbling. Option B (normal lung re-expansion) is typically accompanied by intermittent bubbling, not continuous. Option D (suction pressure too high) would cause continuous bubbling in the suction control chamber, not the water-seal chamber. Option C (chest tube obstruction) would cause decreased or absent drainage and loss of bubbling and tidaling, rather than continuous bubbling.