Effects of Paratracheal Compression and Cricoid Compression on LMA ProSeal Placement

Comparison of the Effects of Paratracheal Compression and Cricoid Compression on LMA ProSeal Placement: a Randomised Clinical Trial.

The aim of this study is to compare the effect of paratracheal and cricoid pressure on LMA ProSeal insertion, insertion time, insertion difficulty, and the rate of optimal positioning of the device after insertion.

Inclusion Criteria:

• Patients aged 19-70 years who are scheduled for general anaesthesia for whom LMA management would be appropriate.

Exclusion Criteria:

• with cervical spine disease
• expected difficult airway
• upper airway abnormalities
• body mass index (BMI) more than 35 kg/m2
• high risk of aspiration (hiatus hernia, gastro-oesophageal reflux disease and starvation)
• postoperative ventilator care
• surgeries requiring positions other than supine.