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  • Title: Flexible optical intubation via the Ambu Aura-i vs blind intubation via the single-use LMA Fastrach: a prospective randomized clinical trial.
    Author: Artime CA, Altamirano A, Normand KC, Ferrario L, Aijazi H, Cattano D, Hagberg CA.
    Journal: J Clin Anesth; 2016 Sep; 33():41-6. PubMed ID: 27555131.
    Abstract:
    STUDY OBJECTIVE: This study was designed to compare the Ambu Aura-i to the single-use LMA Fastrach regarding time to intubation, success rate, and airway morbidity in patients undergoing elective surgery requiring general anesthesia. DESIGN: Prospective, randomized controlled trial. SETTING: Academic medical center. PATIENTS: Sixty-five adult patients scheduled for elective surgery requiring general anesthesia. INTERVENTIONS: Patients were randomized into 2 groups. Group A (n=33) were intubated using Ambu Aura-i and the Ambu aScope 2, a disposable flexible intubating scope, whereas those in group B (n=33) were blindly intubated using the Intubating Laryngeal Mask Airway (ILMA). MEASUREMENTS: First-attempt intubation success rate, overall intubation success rate, time to intubation, incidence of airway morbidity. MAIN RESULTS: The data demonstrated that time for endotracheal intubation in the ILMA group was significantly shorter than in the Ambu Aura-i group (P<.05). There was no difference in the first-attempt intubation success rate (Aura-i=26/33, 78.8%; ILMA=27/33, 81.8%; P=.757) or the overall intubation success rate (Aura-i=29/33, 87.9%; ILMA=31/33, 93.9%; P=.392) between the groups. Four patients (12%) in the Ambu Aura-i group had a failed intubation; 1 was due to a failure of the aScope monitor, whereas 3 were due to inability to visualize the glottis. Two patients (7%) in the ILMA group had a failed intubation due to esophageal intubation. There was no statistically significant difference in airway morbidity between the 2 groups. CONCLUSIONS: The data suggest that intubation with the ILMA is faster but that first-attempt and overall intubation success rates were comparable in both groups. The results suggest that although the flexible intubating scope-guided Aura-i does not outperform blind intubation via the ILMA, the technique is comparable in terms of first-attempt and overall intubation success rate.
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