What is a key indicator of proper endotracheal tube placement?

The presence of bilateral breath sounds is a key indicator of proper endotracheal tube placement. When the endotracheal tube is correctly positioned in the trachea, air can flow freely into both lungs, facilitating the equal distribution of breath sounds upon auscultation. This uniformity indicates that both lungs are being ventilated adequately.

In cases where breath sounds are absent, it may suggest that the tube has been mistakenly placed in the esophagus or obstructed, leading to ineffective ventilation of the lungs. An arc of breath sounds, which could imply uneven ventilation, may indicate that the tube is not in the optimal position, potentially contributing to improper oxygenation and ventilation. Uneven chest movements can also signal malpositioning, potentially reflecting unilateral lung inflation, which can further complicate patient care. Hence, observing bilateral breath sounds serves as a reliable sign that the tube is appropriately placed for effective ventilation.