Effects of proseal laryngeal mask airway cuff inflation on carotid flow in pediatric population during sevoflurane induction

Abstract

Introduction The laryngeal mask cuff inflation can exert a pressure and a displacement on the neck vessels and determine a potential change of the carotid flow. The study exami- ned the effects of cuff inflation of a ProSeal Laryngeal Mask Airway on the carotid bulb during sevoflurane in-duction in pediatric population. Materials and Methods The measurement of some hemodynamic parameters (cross-sectional area carotid artery, resistance index, carotid flow acceleration, systolic and diastolic peak velo- city, SDR [S/D Ratio: Systolic Peak Velocity / End Diastolic Velocity]) were performed bilaterally before and after laryngeal mask cuff inflation by color Doppler ultrasound at the level of the carotid artery bulb during sevoflurane induction in pediatric patients undergoing surgery. A ProSeal laryngeal mask was used in this study as it has a better leak pressure versus the classic laryngeal mask airway. Results Results showed that there was no clinically and statistically significant variation in measured parameters befo- re and after laryngeal mask cuff inflation Conclusion The results demonstrated that in children during sevo- flurane induction, differently from other studies descri- bed in literature, laryngeal mask cuff inflation does not reduce or change the carotid flow and all other hemodynamic parameters.

Keywords

• laryngeal mask airway
• pediatric
• hemody- namic monitoring
• ultrasound
• carotid flow