The Influence of LMA Cuff Pressure on Gastric Insufflation Assessed by Ultrasound in Pediatric Patient

The Influence of LMA Cuff Pressure on Oropharyngeal Leak Pressure and Gastric Insufflation Assessed by Ultrasound in Pediatric Patients

Cuff inflation up to the maximum cuff pressure when using LMA flexible can cause sore throat and discomfort after the surgery, and if the surgery is unexpectedly prolonged, there can be a side effect that can cause ischemic damage around the neck. If keeping cuff pressure low will not increase gastric insufflation and there is no change in other outcome variables, keeping it low may have a positive effect on anesthesia management and outcome in children.

Inclusion Criteria:

• pediatric patients undergoing general anesthesia with LMA flexible

Exclusion Criteria:

• Unstable vital sign, significant arrhythmia or hypotension, Shock
• anticipated difficult intubation or the patient who have facial deformity
• high risk of aspiration
• recent upper respiratory tract infection history