護理師監測胸管時，發現水封瓶內有持續性氣泡。最正確的解釋為何？
A nurse is monitoring a client with a chest tube. The nurse observes continuous bubbling in the water-seal chamber. What is the most appropriate interpretation?
- AThe lung has fully re-expanded肺部已完全復張
- BThere is an air leak in the system✓ 正解系統中存在漏氣
- CThe system is functioning correctly系統運作正常
- DThe chest tube is obstructed胸管阻塞
胸管引流系統中的水封瓶（Water-seal chamber）是防止空氣回流至胸腔的關鍵。正常情況下，隨呼吸會有波動（Tidaling），但若出現「持續性氣泡」，表示系統存在氣漏（Air leak）。這意味著外界空氣不斷進入系統或胸腔，導致胸膜腔負壓無法維持，若不處理可能導致肺部萎陷，因此必須立即檢查管路密閉性。
The water-seal chamber of a chest drainage system is critical for preventing air from re-entering the pleural cavity. Under normal conditions, the water level fluctuates with respiration (tidaling); however, continuous bubbling indicates an air leak in the system. This means outside air is constantly entering the system or pleural cavity, preventing maintenance of negative intrapleural pressure and potentially leading to lung collapse if untreated. The nurse must therefore immediately inspect the tubing for an airtight seal.