2.
气管插管完成时脉搏氧饱和度≥90%的例数、无通气安全时限、气管插管时长、脉搏氧饱和度和呼气末二氧化碳分压等数值
Number of cases with SpO2≥90% upon completion of tracheal incubation, peripheral oxygen saturation, partial pressure of end-tidal CO2, intubation time and safe duration of apnea in the two groups (Mean±SD or number of cases)
| Item | Group 1 (n=40) | Group 2 (n=38) | P |
| Group 1: Preoxygenation with 100% oxygen; Group 2: Without preoxygenation; TI: Tracheal intubation; SpO2: Peripheral oxygen saturation; Pet CO2: Partial pressure of end-tidal carbon dioxide; The data were recorded in 39 patients in Group 1, and 35 patients in Group 2. | |||
| Cases of SpO2≥90% when TI was finished (n, %) | 40(100%) | 38 (100%) | 1 |
| Time (s) | |||
| Safe time duration for apnea | 469.5±143.0 | 63.6±20.0 | < 0.01 |
| Intubation time | 34.4±12.6 | 32.8±9.6 | 0.51 |
| From apnea ended to SpO2 rose to 96% | 40.6±15.8 | 37.5±14.8 | 0.38 |
| From 8 breaths via face mask until mask ventilation ended | 334.3±17.3 | 327.6±16.7 | 0.08 |
| SpO2 (%) | |||
| Baseline | 98.5±1.5 | 98.2±1.6 | 0.45 |
| When tracheal intubation finished | 99.7±0.7 | 95.8±2.7 | < 0.01 |
| Lowest value after apnea ended | 86.9±2.1 | 81.2±4.5 | < 0.01 |
| Pet CO2 (mmHg) | |||
| When mask ventilation ended | 25.3±3.3 | 26.1±4.2 | 0.31 |
| When apnea ended | 45.5±7.6 | 33.1±4.6 | < 0.01 |