Endotracheal tube in the esophagus is best assessed by:: (A) Chest wall movement, (B) Auscultation, (C) CO2 Exhalation, (D) Chest tube passes through vocal cords
Answer is C. For sure shot confirmation of endotracheal tube Capnography is used. ET tube in trachea (capnography) While if almost Flat line appears - Et tube is in esophagus.