胸管病人的水封瓶（water-seal chamber）持續冒氣泡。此發現代表什麼？
A client with a chest tube has continuous bubbling in the water-seal chamber. What does this finding indicate?
- AThe suction pressure is too high抽吸壓力過高
- BThe lung has fully re-expanded肺部已完全復張
- CThere is an air leak in the system✓ 正解系統中存在漏氣
- DThe system is functioning normally系統運作正常
胸管系統的水封瓶（water-seal chamber）是監測胸腔內空氣或液體引流的重要部分。其主要功能是允許空氣從胸腔排出，同時防止外界空氣回流進入胸腔。核心概念是理解水封瓶中氣泡的意義。正常情況下，水封瓶應只有隨著呼吸而發生的潮汐式波動（tidaling），表明胸腔內壓力隨呼吸變化；若有肺部漏氣，則會看到間歇性的氣泡。持續不斷的冒氣泡則表示系統中存在持續性的空氣洩漏，這可能來自於肺部本身，也可能是引流系統的連接處有問題。
Continuous bubbling in the water-seal chamber of a chest tube system indicates an air leak within the drainage apparatus or from the pleural space. Unlike intermittent bubbling, which may occur during expiration or coughing, constant bubbling suggests a persistent entry of air that requires immediate investigation to locate the source. Normal function is characterized by tidaling with respiration, not continuous bubbling.
美國 NCLEX 考題常要求護理師判斷漏氣來源（由近端往遠端夾閉檢查）；台灣臨床則由放射線檢查確認肺擴張狀況。