“SAFETY AND EFFICACY OF BLOCKBUSTER LARYNGEAL MASK AIRWAY VS BASKA MASK FOR DAYCARE SURGERY UNDER GENERAL ANAESTHESIA: A RANDOMIZED CONTROL TRIAL

Abstract

Background: On the day after surgery, patients can return home and recuperate in a familiar setting thanks to the more individualized and aimed care they receive in day-care surgical units. This led to a major innovation in Laryngeal-mask airway in 1981 by Dr. Archie Brain. In such cases LMA have become a modality which will help patient in early recovery and less postoperative complications which were seen during endotracheal intubation. Blockbuster LMA has undergone fewer studies than other devices. The Baska mask and Blockbuster LMA are some of SGA useful in daycare modality. Therefore, this study was done to compare the safety and efficacy between Baska Mask and Blockbuster LMA.

Methods: This prospective randomized, control study was conducted among patients undergoing day care surgery under General Anaesthesia in Rohilkhand Medical College Hospital, Bareilly. Hundred patients were included in the study with 50 patients for each group. Group A: Blockbuster LMA was used to secure the airway and Group B: Baska mask was used to secure the airway. Premedication with I.V. Butorphanol 0.02 mg/kg and Midazolam 0.02 mg/kg. Preoxygenation was done for 3 minutes, after which I.V. Propofol 2 mg/kg was used to induce anaesthesia. After confirming adequate mask ventilation, Succinylcholine 1 mg/kg was administered for neuromuscular blockade. After 60 seconds, either of the devices was inserted using a midline insertion technique with the neck in a neutral posture. The primary measure was the time taken for insertion, ease of insertion, OLP and Number of attempts Secondary outcome measures included  laryngopharyngeal morbidity (blood staining, and sore throat) immediately and 2, 4 and 6 hours postoperatively. Data analysis was done using SPSS version 17.

Results: Mean time of Insertion was more in Group A (11.62 ± 4.0) as compared to Group B (8.62 ± 3.49) and there was significant difference in mean time of Insertion in between Group A and Group B (P=0.000). There was no measurable difference between the Baska mask and Blockbuster LMA in terms of ease of insertion, OLP, sore throat and fewer maneuvers were needed. Blood stain on Device was absent in 31 cases and present in 19 cases in Group A and Blood stain on Device was absent in 39 of cases and present in 11 of cases in Group B. There was significant difference in Blood stain on Device in between Group A and Group B (P=0.013).

Conclusion: In this study Baska mask was superior in terms of time taken for insertion in seconds in comparison to Blockbuster LMA, Ease of insertion, Oropharyngeal leak pressure, Number of attempts for insertion were found to be non-significant. Blood stain on device was marked increased in Blockbuster LMA group with no significant difference seen in terms of sore throat at different intervals.