Comparison of leakage test and ultrasound imaging to validate ProSeal supraglottic airway device placement

Abstract

Background and Aims: To validate the placement of ProSeal supraglottic airway device using ultrasound (USG) with leakage test in adult population of both sexes. Material and Methods: This single-arm observational study was conducted on 80 American Society of Anesthesiology (ASA) I-III patients, undergoing elective surgery under general anesthesia with ProSeal supraglottic airway device. Leakage pressure test was conducted in all cases. The position of the ProSeal laryngeal mask airway (LMA) was assessed by USG in the pharyngeal, laryngeal, and the cranial-caudal axis plane. The fiberoptic examination was done to confirm the position of ProSeal if the seal pressure was 27 cm H2O and a score of 3. USG examination is comparable with leakage test in predicting the requirement of reinsertion (P = 0.003) and a score of 19 equating 0–1 predicted the need for reinsertion with a sensitivity and specificity of 80% and 100%, respectively. Conclusion: USG is comparable with the leakage test for confirmation of ProSeal placement.

Keywords

• cuff pressure
• fiberoptic examination
• leakage test
• proseal supraglottic airway device
• ultrasound imaging