Question

A 30 year old male was intubated for surgery. The best method to confirm the position of Endotracheal tube is

• A. X-ray chest
• B. Auscultation
• C. Capnography
• D. Chest expansion

Answer 1

The Correct Option is C

In the context of confirming the position of an endotracheal tube during surgery, various methods can be employed. Evaluating the effectiveness and reliability of these methods is critical to ensure patient safety and proper ventilation. Here is a concise analysis of the options:

Method	Explanation	Reliability
X-ray chest	While a chest x-ray can confirm tube placement, it is not immediate and practical in an operating room setting.	Low
Auscultation	Listening for breath sounds over the lungs. This can be misleading due to referred sounds or unilateral ventilation.	Moderate
Capnography	Monitors the amount of carbon dioxide in exhaled air, ensuring the correct placement of the tube in the trachea, not the esophagus.	High
Chest expansion	Observation of chest movement with ventilation. It can be deceiving if tube is incorrectly placed.	Low

The most reliable method to confirm proper endotracheal tube placement is Capnography. This modality offers continuous and real-time feedback by measuring the end-tidal CO2 level, providing immediate confirmation of intubation success.