Nowadays endotracheal intubation is considered a fundamental management procedure during emergency resuscitation. Unrecognized misplacement of the ETT during endotracheal intubation and ventilation, has a reported incidence of 2.9-16.7% and is a frequent cause of morbidity and mortality in emergency intubations. The aim of this study is to determine the diagnostic accuracy of the tracheal, diaphragmatic and sonographic estimation of lung sliding for the rapid verification of endotracheal tube position in the intensive care unit (RICU) with reference to Co₂ monitors (capnography) (the gold standard technique)

Inclusion Criteria:

• Age >18 years old with endotracheal intubation
• Having normal airway anatomy

Exclusion Criteria:

• Age below 18 years old
• Neck deformities,
• Presence in history of neck radiation,
• Cervical spine immobility/instability
• Unstable vital signs
• Unwilling to participate or denial of informed consent

Patients intubated with a cuff ETT