Endotracheal tube in the esophagus is best assessed by:
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.
Chest wall movement
Auscultation
CO2 Exhalation
Chest tube passes through vocal cords
FMGE 2019