Overview
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.
Eligibility
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