Efficacy of blockbuster LMA in comparison to fastrach LMA as a conduit for blind tracheal intubation: A single blind prospective randomized clinical study

BlockBuster LMA, A newer supraglottic airway device, is claimed to be an efficient conduit for endotracheal intubation. Intubating LMA is an established device for the same. This randomised study was undertaken to evaluate the success rate of blind tracheal intubation using either of these LMAs. Methods : Sixty patients of age group 20-60 years undergoing general anaesthesia were randomised into 2 groups, of 30 patients each, for tracheal intubation using either BlockBuster LMA or Intubating LMA. After induction of anaesthesia, LMAs were inserted and on achieving adequate ventilation with the device, blind intubation was attempted through the suprglottic airway devices. The primary objective was first pass successful intubation and secondary outcomes were ease and time for LMA insertion, oropharyngeal seal pressure (OSP) and complications. Data was analysed using SPSS V22 software. Results First attempt success rate of tracheal intubation was 90% in Group B and 66.6% in Group F (P=0.028), while the oeral success rate of intubation was 90% in Group B and 89.9% in Group F (P=0.3). The OSP in Group G was 33.7 and 22 cm H20  in Group F (P=0.001). Complications were less with BlockBuster LMA. Conclusion : BlockBuster LMA provides higher first pass success rate of blind tracheal intubation with less complications.