Table 2 Data about the procedure, drugs dosage, adverse events and remedial interventions. Compared with the mask oxygen or WNJ oxygen groups, the use of SJOV via WNJ during the surgery significantly decreased the total percentage of adverse events and surgical time, cases of SpO2 < 95% and PETCO2 < 10 mmHg, and the application rate of jaw-lift
Monitored variables [n (%)] | mask oxygen(I) (N = 33) | WNJ oxygen (II) (N = 33) | WNJ SJOV (III) (N = 34) | P-Value (I VS II) | P-Value (I VS III) | P-Value (II VS III) | P |
|---|---|---|---|---|---|---|---|
Surgical time (min) | 24.28 ± 10.18 | 23.19 ± 9.72 | 22.56 ± 5.91 | 0.053 | 0.013 | 0.053 | 0.027 (Kruskal-wallis) |
Anesthesia recovery (min) | 14.73 ± 5.59 | 13.22 ± 3.73 | 13.97 ± 4.12 | 0.068 | 0.217 | 0.866 | 0.061 (Kruskal-wallis) |
WNJ placement depth (cm) | – | 12.22 ± 0.54 | 12.34 ± 0.47 | – | – | 0.087a | – |
Propofol dose (mg) | 207.01 ± 62.85 | 212.57 ± 51.44 | 225.01 ± 48.63 | 1.000 | 0.002 | < 0.001 | < 0.001 (Kruskal-wallis) |
Remifentanil dose (μg) | 32.28 ± 6.18 | 33.02 ± 8.27 | 33.21 ± 4.97 | 0.059 | 0.244 | 0.196 | 0.079 (Kruskal-wallis) |
Ephedrine dose (mg) | 5.14 ± 1.03 | 5.23 ± 1.16 | 5.25 ± 1.10 | 0.516 | 0.417 | 0.975 | 0.022 (Kruskal-wallis) |
Total adverse events | 12 (36) | 13 (39) | 4 (12) | 1.000 | 0.004 | 0.002 | 0.013 |
Intra-operation | |||||||
 SpO2 < 95% | 11 (33) | 9 (27) | 2 (6) | 0.789 | 0.006 | 0.023 | 0.017 |
 PETCO2 < 10 mmHg | 12 (36) | 11 (33) | 3 (9) | 1.000 | 0.009 | 0.017 | 0.019 |
 Jaw-lift | 11 (33) | 10 (30) | 1 (3) | 1.000 | 0.001 | 0.003 | 0.004 |
 Mask pressurized ventilation | 5 (15) | 3 (9) | 0 (0) | 0.708 | 0.025 | 0.114 | 0.071 |
 Oropharyngeal tube | 2 (6) | 0 (0) | 0 (0) | 0.492 | 0.239 | – | 0.126 |
 Nasal bleeding | 0 (0) | 1 (3) | 2 (6) | 1.000 | 0.493 | 1.000 | 0.369 |
 Cough | 3 (9) | 1 (3) | 1 (3) | 0.613 | 0.356 | 1.000 | 0.420 |
 Laryngospasm | 0 (0) | 0 (0) | 0 (0) | – | – | – | – |
 Aspiration | 0 (0) | 0 (0) | 0 (0) | – | – | – | – |
 Hip twist | 2 (6) | 1 (3) | 0 (0) | 1.000 | 0.239 | 0.493 | 0.348 |
 Bradycardia | 9 (27) | 8 (24) | 4 (12) | 1.000 | 0.132 | 0.217 | 0.254 |
 Tachycardia | 2 (6) | 1 (3) | 0 (0) | 1.000 | 0.239 | 0.493 | 0.348 |
 Hypertension | 5 (15) | 4 (12) | 1 (3) | 1.000 | 0.105 | 0.197 | 0.221 |
 Hypotension | 1 (3) | 1 (3) | 3 (9) | 1.000 | 0.614 | 0.614 | 0.453 |
Post-operation | |||||||
 Nausea or Vomiting | 1 (3) | 2 (6) | 1 (3) | 1.000 | 1.000 | 0.614 | 0.761 |
 Pharyngalgia | 2 (6) | 3 (9) | 3 (9) | 1.000 | 1.000 | 1.000 | 0.881 |
 Xerostomia | 2 (6) | 3 (9) | 4 (12) | 1.000 | 0.427 | 0.709 | 0.488 |
 Nasal bleeding | 0 (0) | 0 (0) | 0 (0) | – | – | – | – |
 Barotrauma | 0 (0) | 0 (0) | 0 (0) | – | – | – | – |