Background. Tracheal intubation is a potentially life-saving procedure. This skill is taught to many anesthetic healthcare\r\nprofessionals, including nurse anesthetists. Our goal was to evaluate the learning ability of nurse anesthetist trainees in their\r\nperformance of orotracheal intubation with theMacintosh laryngoscope. Methods. Eleven nurse anesthetist trainees were enrolled\r\nin the study during the first three months of their training. All trainees attended formal lectures and practice sessions with manikins\r\nat least one time on performing successful tracheal intubation under supervision of anesthesiology staff. Learning curves for each\r\nnurse anesthetist trainee were constructed with the standard cumulative summation (cusum) methods. Results. Tracheal intubation\r\nwas attempted on 388 patients. Three hundred and six patients (78.9%) were successfully intubated on the traineesââ?¬â?¢ first attempt\r\nand 17 patients (4.4%) on the second attempt. The mean Ã?± SD number of orotracheal intubations per trainee was 35.5 Ã?± 5.1 (range\r\n30ââ?¬â??47). Ten (90.9%) of 11 trainees crossed the 20% acceptable failure rate line. A median of 22 procedures was required to achieve\r\nan 80% orotracheal intubations success rate. Conclusion. At least 22 procedures were required to reach an 80% success rate for\r\norotracheal intubation using Macintosh laryngoscope in nonexperienced nurse anesthetist trainees.
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