Abstract Background and Aims: Oropharyngeal leak pressure (OLP) of second-generation supraglottic devices is reported to be higher, suggesting a more effective seal with the patient airway and improved safety during use. This is particularly important in laparoscopic surgeries, where increased airway pressures are common, and making an effective seal by a supraglottic device is essential to prevent gas leakage along with adequate ventilation. We aim to compare the clinical performance of the laryngeal mask airway (LMA) ProSeal and LMA BlockBuster in general anaesthesia for abdominal laparoscopic surgeries. Materials and Methods: A total of 60 patients, classified as American Society of Anesthesiologists physical status I–II and aged over 18 years, who were scheduled for elective laparoscopic surgery under general anaesthesia, were recruited for the study. The patients were randomised into two groups: LMA ProSeal (Group P) and LMA BlockBuster (Group B). Following induction of anaesthesia, OLP was measured in both groups. In addition, the insertion characteristics of the supraglottic devices were recorded and compared. Statistical analysis was conducted using IBM SPSS Statistics for Windows, version 25.0 (IBM Corp., Armonk, NY, USA). Results: The OLP of LMA ProSeal and LMA BlockBuster was found to be similar ( P = 0.051). The insertion time for LMA ProSeal was significantly longer as compared to LMA BlockBuster. Conclusion: The OLP of LMA ProSeal and LMA BlockBuster is comparable. The insertion time was significantly shorter with LMA BlockBuster compared to LMA ProSeal.
Singh et al. (Thu,) studied this question.