Ultrasound vs. Auscultation for Optimal Depth of the Cuffless RAE Tube

Ultrasound-guidance Versus Auscultation to Confirm Optimal Insertion Depth of the Cuffless Oral Ring-Adair-Elwyn (RAE) Endotracheal Tube in Pediatric Patients

The aim of this study is to compare the ultrasound-guidance versus auscultation to confirm optimal insertion depth of the cuffless oral Ring-Adair-Elwyn (RAE) endotracheal tube in pediatric patients undergoing general anesthesia.

Inclusion Criteria:

• Children age under 7 years
• Undergoing general anesthesia
• Endobronchial intubation with cuffless oral RAE tube

Exclusion Criteria:

• Pulmonary disease
• Active upper respiratory tract infection
• History of upper or lower respiratory tract infection within 2 weeks
• Emergent operation
• Unstable vital sign