# 一位插管個案在翻身後，血氧飽和度下降且胸廓擴張變得不對稱。波形二氧化碳圖持續顯示，且抽吸管通過無阻力。點選圖中管子最能解釋這些發現的部位。

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=581184&lang=zh-tw  
> language: zh-TW  
> subject: Physiological Adaptation  
> category: PA

## 題目

一位插管個案在翻身後，血氧飽和度下降且胸廓擴張變得不對稱。波形二氧化碳圖持續顯示，且抽吸管通過無阻力。點選圖中管子最能解釋這些發現的部位。

![](https://mymerci.kr/data/nclex/hotspot/regen_20260908_2350/HSR521.svg)

## 解析

D 顯示遠端尖端越過氣管隆突進入主支氣管，導致通氣主要導向單側肺。

## 深入解析

快速解答
D. D 顯示遠端尖端越過氣管隆突進入主支氣管，導致通氣主要導向單側肺。
為何這是最佳選擇
持續的呼氣二氧化碳支持氣道內置放而非食道內置放，但無法確定適當深度。管子通暢仍可能插入過深。圖中遠端尖端通過分叉處；其深度（而非接頭或氣囊處的阻塞）解釋了不對稱擴張。
臨床情境
這些觀察結果為虛構的教學資料。請應用所述情境；所選特徵本身不能取代完整的床邊評估。
記憶口訣
氣道置放和正確深度是分開的檢查項目。
決策規則
氣道置放和正確深度是分開的檢查項目。
為何其他區域不符合
A 是外部接頭，看起來連續。B 是位於分叉上方氣管內的氣囊。C 是解剖上的分叉本身。D 是位於該分叉之後的管子組件。
**資料來源**
- 氣管內管延伸至主支氣管可導致不對稱通氣，需要矯正。

## 重要概念

- **Endotracheal tube depth despite persistent capnography** — 氣道置放和正確深度是分開的檢查項目。
- **Comparison with context** — 持續的二氧化碳圖可能讓學習者誤以為安全，即使管子深度錯誤。

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