Self-pressurized air-Q® intubating laryngeal airway versus the LMA® Classic™: a randomized clinical trial

Abstract

www.clinicaltrials.gov (NCT02206438). Registered 1 August 2014.

Comparative evaluation of self-pressurized Air-Q® and Proseal™ LMA® in patients undergoing elective surgery under general anaesthesia: A randomized clinical trial

“…Higher scores may be associated with better sealing and ventilation. [ 20 ] The fiber-optic view of the larynx through Air-Q SP was better than that of Proseal LMA as previously reported. [ 5 8 10 ] This may be due to the structural difference in the Air-Q SP airway tube; it is larger and more preformed than the Proseal LMA, which has a drain tube which is next to the ventilation channel and passes through the much deeper cuff container to terminate distally in the mid-line.…”

“…Clinical studies have compared Air-Q SP and other SADs for OLP showing variable results. [ 1 2 5 19 20 21 ] The initial study was carried out to assess the feasibility of Air-Q-SP in clinical practice and generate data for future comparison trials in 352 children using sizes of 1.0, 1.5, 2.0, and 2.5. [ 1 ] The mean OLP was 17.8 ± 5.4 and 20.4 ± 5.5 cmH 2 O at baseline and 10 min, respectively.…”

“…A study compared Air-Q SP and classic LMA in adult patients; the OLP was 16.8 ± 4.9 and 18.1 ± 4, respectively, at the start and after 10 min. [ 20 ] Recently, Lee JS et al . [ 21 ] compared Air-Q SP and i-Gel older patients; the OLP with Air-Q SP was 17 (14.0–21.0) [9.0–28.0] and 18.0 (15.0–21.0) [10.0–30.0] cmH 2 O at the start and after 10 min, respectively.…”

Comparison between Air-Q Self Pressurized Airway Device with Blocker and Proseal Laryngeal Mask Airway in anesthetized paralyzed adult female patients undergoing elective gynecological operations

“…Although the PLMA is constructed from silicone, which conforms adequately to supraglottic structures better than PVC, with intra-cuff pressure maintained at 60 cmH 2 O, a significantly higher OLP was found in the SP Blocker group due to the better seal provided by the non-inflatable cuff of the SP Blocker beside its unique design features: the anterior curve of its airway tube that approximates the oropharyngeal airway providing stable end-to-end coupling with the glottis, mask ridges that stabilize the bowl transversely and higher posterior heel height that improves the seal at the tongue [ 38 , 39 ]. Our results clinically corroborate two studies showing that the mean OLP of the Air-Q Blocker and Air-Q SP became higher than that of the PLMA, but they did not agree with a study which found that Air-Q ILA has a lower mean OLP than the PLMA, while previous studies found no statistically significant differences when comparing either the Air-Q ILA and the PLMA or the Air-Q Blocker and the PLMA [ 6 , 31 , 40 – 42 ].…”