How can you confirm proper endotracheal tube placement in the field when waveform capnography is available?

How can you confirm proper endotracheal tube placement in the field when waveform capnography is available?

• A. A continuous capnography waveform (EtCO2) with bilateral breath sounds and symmetrical chest rise
• B. Auscultation alone
• C. Chest radiograph
• D. Palpation of the tracheal rings

Answer: (A)

Confirming endotracheal tube placement in the field relies on detecting CO2 with waveform capnography. A continuous EtCO2 waveform shows that CO2 is being exhaled through the tube, meaning the tube is in the trachea and ventilation is reaching the lungs. When this is paired with bilateral lung sounds and symmetric chest rise, you have both correct airway placement and effective ventilation of both lungs. Auscultation alone can be misleading, and chest radiography isn’t immediately available in the field. Palpating the tracheal rings doesn’t reliably confirm placement. So, the combination of a steady capnography waveform and signs of ventilation (bilateral breath sounds and symmetric chest expansion) provides the strongest, practical confirmation in the field.

Confirming endotracheal tube placement in the field relies on detecting CO2 with waveform capnography. A continuous EtCO2 waveform shows that CO2 is being exhaled through the tube, meaning the tube is in the trachea and ventilation is reaching the lungs. When this is paired with bilateral lung sounds and symmetric chest rise, you have both correct airway placement and effective ventilation of both lungs. Auscultation alone can be misleading, and chest radiography isn’t immediately available in the field. Palpating the tracheal rings doesn’t reliably confirm placement. So, the combination of a steady capnography waveform and signs of ventilation (bilateral breath sounds and symmetric chest expansion) provides the strongest, practical confirmation in the field.