A trauma patient needs to be intubated and is being resuscitated in the emergency department. Which of the following is a best method to confirm the correct placement of the endotracheal (ET) tube?

1. A

   Assess lung sounds

2. B

   Capnography

3. C

   Direct visualization of the vocal cords

4. D

   None of the above .

Appeared in: NORCET 9 Mains - 2025

Explanation

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• Capnography is the most reliable and rapid method for confirming tracheal placement of an ET tube.
• It provides objective, quantitative data by measuring end-tidal carbon dioxide (ETCO2) in exhaled air.
• A consistent waveform on the capnograph confirms that the tube is in the airway and that effective ventilation is occurring on a breath-by-breath basis.
• It is the recognized standard of care for both initial confirmation and continuous monitoring of ET tube position.

Why Other Options Were Wrong

• Option A: Auscultating lung sounds is a subjective assessment and can be highly unreliable. Sounds from air insufflating the stomach can be transmitted to the chest wall, leading to a false confirmation of correct placement.
• Option C: This action confirms that the tube has passed through the vocal cords during the act of intubation, but it does not confirm the final resting position of the tube tip or prevent subsequent dislodgement.
• Option D: This is incorrect because capnography is a valid, widely accepted, and highly reliable method for confirming ET tube placement.

Related Visual

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Confirmation of Endotracheal Tube Placement in acute care settings.
• Unrecognized esophageal intubation is a catastrophic event that leads to severe hypoxia and death. Continuous waveform capnography is the single most important tool to prevent this.
• A nurse's critical responsibility is to continuously monitor the capnography waveform and ETCO2 value after intubation. A sudden loss of the waveform (a flat line) indicates an immediate emergency, such as tube dislodgement or obstruction.
• What if? If the patient is in cardiac arrest, ETCO2 may be very low or absent even with correct tube placement due to lack of circulation and pulmonary blood flow. In this specific scenario, clinicians must rely more heavily on other signs like direct visualization during intubation, chest rise, and auscultation for initial confirmation.

How to Approach the Question

• First, identify the core of the question: it asks for the 'best' method, which implies a need to compare the reliability and speed of different techniques.
• Analyze each option's role in the intubation process. Differentiate between actions taken during insertion (direct visualization) and actions taken for confirmation after insertion.
• Recall the hierarchy of evidence for clinical procedures. Objective, quantitative measurements (like capnography) are generally superior to subjective, qualitative assessments (like auscultation).
• Consider the clinical context of a trauma resuscitation, where speed and accuracy are paramount.
• Select the option that provides the most definitive, real-time evidence of successful tracheal ventilation, which is capnography.

Concept Tested & Keywords

• Concept Tested: Confirmation of Endotracheal Tube Placement
• Stem keywords: trauma patient, intubated, resuscitation, emergency department, endotracheal (ET) tube, confirm placement
• Lead-in keywords: best method
• Clinical cues: The setting is a trauma resuscitation, which emphasizes the need for rapid and reliable methods.
• Negative lead-in flag: false

Question ID

Q7o4pmG0raMJx6ieEjVIqy

Copy ID

Reference Book

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 605-607, 616-618

E6 Nursing Fundamentals Taylor p. 512-514