Table 7.
Overview of polysomnographic data stratified by surgery
| LeFort III | p | Monobloc | p | Monobloc with LeFort II | p | All patients | p | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OAHI (events/hour) | |||||||||||
| Preoperative (n = 11) |
26.0 (11.7–49.0) |
n = 4 | 0.114* |
33.0 (25.5–45.2) |
n = 5 | 0.189* |
30.7 (15.7–45.8) |
n = 2 | - |
33.0 (8.6–46.7) |
0.016* |
| Postoperative (n = 12) |
1.1 (0.6–14.1) |
n = 6 |
1.2 (0.4–3.6) |
n = 5 | 8.4 | n = 1 |
1.3 (0.5–10.9) |
||||
| SpO2 Nadir (%) | |||||||||||
| Preoperative (n = 11) |
88.0 (78.8–90.0) |
n = 4 | 0.163* |
75.0 (68.0–87.0) |
n = 5 | 0.108* |
76.5 (68.3–84.8) |
n = 2 | - |
87.0 (64.0–88.5) |
0.011* |
| Postoperative (n = 12) |
92.5 (91.0–94.0) |
n = 6 |
93.0 (90.0–93.0) |
n = 5 | 89.0 | n = 1 |
92.0 (89.8–92.3) |
||||
| Time Between PSG and Surgery (years) | |||||||||||
| Preoperative (n = 11) |
1.7 (0.8–2.9) |
n = 4 |
3.3 (1.8–3.9) |
n = 5 |
0.8 (0.6–1.0) |
n = 2 | 1.8 (0.7–3.5) | ||||
| Postoperative (n = 12) |
3.7 (2.5–4.1) |
n = 6 |
7.4 (2.0–8.4) |
n = 5 | 3.5 | n = 1 | 3.8 (2.1–7.7) | ||||
| CPAP | |||||||||||
| Preoperative, n (%) | 5 (83.3) | 0.459** | 3 (42.9) | 0.905** | 1 (100) | - | 9 (64.3) | 0.638** | |||
| Postoperative, n (%) | 8 (66.7) | 4 (40.0) | 1 (100) | 13 (56.5) | |||||||
| Nasal Cannula | |||||||||||
| Preoperative, n (%) | 5 (100) | 0.194** | 3 (75.0) | 0.136** | 1 (100) | - | 9 (90.0) | 0.091** | |||
| Postoperative, n (%) | 8 (72.7) | 2 (28.6) | 2 (100) | 12 (60.0) | |||||||
| Tracheostomy | |||||||||||
| Preoperative, n (%) | 4 (66.7) | 0.171** | 2 (40.0) | 0.920** | 0 | - | 6 (46.2) | 0.412** | |||
| Postoperative, n (%) | 2 (28.6) | 3 (42.9) | 0 | 5 (31.3) | |||||||
Values reflect medians (interquartile ranges) unless otherwise specified. For CPAP, nasal cannula, and tracheostomy use, both the raw numbers (n) and percentages are shown. Raw numbers indicate how many patients had data available at each time point, while percentages represent the proportion of those patients requiring the intervention. Percentages therefore provide the most accurate representation of outcomes when denominators differ between pre- and postoperative groups, OAHI obstructive apnea–hypopnea index, SpO2 oxygen saturation percentage, CPAP continuous positive airway pressure, PSG polysomnography
*The Mann–Whitney U test for non-parametric data, two tailed, p < 0.05 is considered statistically significant
**Z-test, two tailed, p < 0.05 is considered statistically significant