Learning curves for bag-and-mask ventilation and orotracheal intubation: an application of the cumulative sum method.

Abstract:

BACKGROUND:In this study, the authors determined the success and failure rates for interns learning bag-and-mask ventilation and orotracheal intubation. Their goal was to determine the amount of experience needed to perform these procedures correctly. METHODS:The authors recorded 695 bag-and-mask ventilations and 679 orotracheal intubations performed by 15 inexperienced interns during their 3 month-long anesthesia rotations. Learning curves for each procedure for each intern were constructed with both the standard and risk-adjusted cumulative sum methods. The average number of procedures required to attain a failure rate of 20% was estimated for each technique. RESULTS:Fourteen of 15 interns attained acceptable failure rates at bag-and-mask ventilation after 27 +/- 13 procedures, with a median (95% confidence interval) of 25 (15-32) procedures to cross the decision limit when considering all 15 interns. Nine of 15 interns attained acceptable failure rates at orotracheal intubation after 26 +/- 8 procedures, with a median of 29 (22-not estimable) procedures to cross the limit when considering all interns. The proportion of interns who attained acceptable failure rates for mask ventilation was greater than for tracheal intubation (93% vs. 60%, P = 0.025). Overall, our interns achieved a bag-and-mask ventilation failure rate of 20% or better after a median of 25 procedures; approximately 80% of interns achieved the goal after 35 procedures or less. CONCLUSIONS:Participating interns developed mask ventilation skills faster than orotracheal intubation skills, and there was more variability in the rate at which intubation skills developed. A median of 29 procedures was required to achieve an 80% orotracheal intubation success rate.

journal_name

Anesthesiology

journal_title

Anesthesiology

authors

Komatsu R,Kasuya Y,Yogo H,Sessler DI,Mascha E,Yang D,Ozaki M

doi

10.1097/ALN.0b013e3181d96779

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

1525-31

issue

6

eissn

0003-3022

issn

1528-1175

journal_volume

112

pub_type

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