The optimal timing of Ambu® Aura onceTM Laryngeal Mask Airway insertion with propofol induction

Background: Laryngeal Mask Airway (LMA) is usually inserted without muscle relaxants, which requires good jaw relaxation. Previous studies have focused on creating the optimal condition for LMA insertion with different anesthetic adjuncts. This study to determine whether time interval between induction and influences placement conditions. Insertion of at best may decrease complications associated placement. Methods: a prospective randomized total 198 ASA I or II patients assigned three groups: Group 0”, 60” 90”, number representing seconds from loss eye lash reflex (ELR) insertion. All were pretreated intravenous midazolam 2 mg fentanyl 1 mcg/kg given time. Induction was achieved 2.5 mg/kg propofol. Ambu® AuraOnceTM placed by blinded anesthesiologist who also assessed based score system. The primary outcome find in each group. conditions defined as non-optimal 6 > 6, respectively. Results: percentage significantly amongst groups (p = 0.031). 68% 60”, that higher than 45% 0” 0.008), but not 58% 90” (p=0.207). Conclusions: general anesthesia propofol, pre-administration fentanyl, provided highest 60 after ELR.