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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Anesth Analg. 2011 Oct 24;115(1):95–101. doi: 10.1213/ANE.0b013e31822dac35

Table 4.

Specific modifications of the rapid sequence induction (RSI) procedure. Estimates correspond to either probabilities and their 95% confidence intervals or the odds ratio comparing attendings to residents (reference group). Counts (labeled “N”) are provided since these responses were provided if the gate question was answered affirmatively.

All: p (95% CI) Status: p (95% CI) Status Comparison
Resident Attending OR (95% CI) P-value
Oxygenate before induction
N 387 175 212 --- ---
For how long?
 > 5 minutes 0.10 (0.07, 0.14) 0.13 (0.08, 0.19) 0.08 (0.05, 0.13) 0.61 (0.30, 1.23) 0.168
 3–5 minutes 0.55 (0.51, 0.60) 0.54 (0.47, 0.61) 0.56 (0.49, 0.63) 1.08 (0.69, 1.68) 0.742
 < 3 minutes 0.11 (0.08, 0.15) 0.13 (0.08, 0.19) 0.10 (0.07, 0.14) 0.76 (0.44, 1.32) 0.337
 4 vital capacity breaths 0.12 (0.09, 0.16) 0.13 (0.09, 0.18) 0.12 (0.08, 0.18) 0.97 (0.56, 1.70) 0.921
 Until EtO2 >80% 0.19 (0.14, 0.25) 0.16 (0.11, 0.23) 0.21 (0.16, 0.28) 1.41 (0.87, 2.29) 0.159
Apply cricoid pressure
N 351 160 191 --- ---
When is it applied?
 Before the induction drug 0.28 (0.25, 0.33) 0.35 (0.28, 0.43) 0.23 (0.18, 0.29) 0.56 (0.34, 0.91) 0.019
 At the same time as induction drug 0.57 (0.52, 0.62) 0.56 (0.48, 0.63) 0.58 (0.52, 0.64) 1.11 (0.73, 1.68) 0.634
 After loss of lid reflex 0.08 (0.06, 0.12) 0.07 (0.04, 0.14) 0.09 (0.06, 0.14) 1.20 (0.53, 2.74) 0.657
 After loss of verbal contact 0.06 (0.04, 0.09) 0.02 (0.01, 0.06) 0.10 (0.07, 0.15) 5.78 (1.76,19.00) 0.004
Ventilate patient with a facemask
N 297 126 171 --- ---
When do you attempt to ventilate?
 Before administration of muscle relaxant 0.41 (0.35, 0.48) 0.47 (0.38, 0.56) 0.37 (0.30, 0.46) 0.68 (0.46, 1.01) 0.058
 After administration of muscle relaxant 0.35 (0.30, 0.42) 0.37 (0.28, 0.46) 0.35 (0.27, 0.43) 0.92 (0.55, 1.53) 0.738
 Both before and after administration of muscle relaxant 0.26 (0.20, 0.32) 0.17 (0.10, 0.26) 0.32 (0.25, 0.41) 2.37 (1.22, 4.61) 0.011
How many breaths do you give?
 1 breath 0.28 (0.22, 0.36) 0.31 (0.22, 0.42) 0.26 (0.20, 0.34) 0.80 (0.48, 1.31) 0.373
 < 5 0.48 (0.42, 0.55) 0.56 (0.45, 0.65) 0.43 (0.36, 0.51) 0.61 (0.38, 0.99) 0.047
 5–10 breaths 0.20 (0.15, 0.25) 0.15 (0.10, 0.22) 0.23 (0.17, 0.30) 1.66 (0.94, 2.94) 0.080