Continuous variables | Labor Status | Univariate analysis | ||
---|---|---|---|---|
Labor N = 221 | No Labor N = 363 | Mean difference (95% CI) | p-value | |
Time to effective ventilation (s), mean (SD) | 16.0 (5.75) | 15.3 (3.35) | -0.65 (−1.49 to 0.18) | 0.1262 |
Seal pressure (cmH2O), mean (SD) | 26.8 (3.44) | 27.5 (3.87) | 0.79 (0.19 to 1.4) | 0.0104 |
Peak airway pressure (cmH2O), mean (SD) | 17.3 (3.76) | 18.9 (4.03) | 1.54 (0.89 to 2.19) | < 0.0001 |
Minimum tidal volume (ml), mean (SD) | 465.0 (45.62) | 484.2 (57.12) | 19.17 (10.75 to 27.6) | < 0.0001 |
Maximum tidal volume (ml), mean (SD) | 477.9 (42.61) | 501.1 (52.63) | 23.21 (15.39 to 31.03) | < 0.0001 |
Lowest SpO2 (%), mean (SD) | 98.6 (1.10) | 98.5 (1.14) | −0.10 (−0.29 to 0.09) | 0.3012 |
Gastric aspirate volume (mL), mean (SD) | 12.0 (7.16) | 15.5 (17.12) | 3.53 (1.53 to 5.54) | 0.0006 |
pH of gastric aspirate, mean (SD) | 2.3 (0.62) | 2.4 (0.95) | 0.11 (−0.02 to 0.24) | 0.0851 |
pH of sLMA laryngeal surface, mean (SD) | 7.0 (0.55) | 7.1 (0.39) | 0.08 (0.00 to 0.16) | 0.0559 |
Binary variables | Labor N = 221 | No Labor N = 363 | Unadjusted odds ratio (95%CI) | p-value |
First-attempt sLMA insertion failure, n (%) | 9 (4.07) | 1 (0.28) | 15.37 (1.93 to 122.14) | 0.0098 |
Blood on sLMA, n (%) | 7 (3.17) | 1 (0.28) | 11.84 (1.45 to 96.82) | 0.0212 |
Sore throat, n (%) | 14 (6.33) | 24 (6.61) | 0.96 (0.48 to 1.89) | 0.8959 |
Voice hoarseness, n (%) | 2 (0.90) | 2 (0.55) | 1.65 (0.23 to 11.79) | 0.6185 |