Table 3.
Sleep physiological variables
|
Variables |
Control (n = 36) |
Pre surgery (n = 16) |
After surgery (n = 16) |
p |
|---|---|---|---|---|
| (after vs. pre) | ||||
| % SE |
73.43 ± 9.16 |
74.27 ± 15.35 |
77.42 ± 23.73 |
ns |
| % 1NREM |
10.80 ± 12.14 |
11.37 ± 10.78 |
14.34 ± 9.17 |
ns |
| % 2NREM |
49.92 ± 18.71 |
57.52 ± 20.37 |
43.88 ± 5.80 |
ns |
| % 3NREM |
15.68 ± 7.32 |
13.59 ± 10.62 |
17.54 ± 5.70 |
0.000* |
| % REM |
23.60 ± 13.27 |
17.52 ± 11.91 |
24.24 ± 8.26 |
0.049* |
| Mean SaO2 |
92.66 (78 to 97) |
93.30 (87 to 97) |
94.3 (86.6 to 98) |
ns |
| Nadir SaO2 |
79.90 (50 to 94) |
83.25 (70 to 94) |
85 (70 to 95) |
ns |
| Wake SaO2 |
97 (94 to 98) |
96.38 (95 to 99) |
97 (94 to 99) |
ns |
| Mean AHI |
15.34 ± 9.14 |
15.65 ± 15.51 |
6.26 ± 7.57 |
0.008* |
| ESS |
9.18 ± 5.34 |
6.92 ± 6.54 |
3.00 ± 3.56 |
ns |
| BQ |
1.45 ± 0.50 |
1.75 ± 0.45 |
1.08 ± 0.28 |
0.001* |
| AHI (<5) |
10 |
2 |
9 |
|
| AHI ( 5 < 15) |
14 |
7 |
6 |
|
| AHI (15 < 30 ) |
5 |
4 |
1 |
|
| AHI (≥30) | 7 | 3 | 0 |
AHI, Apnea/hypopnea index; BQ, Berlin Questionnaire; ESS, Epworth Sleepiness Scale; NREM, No Rapid-eye-movement sleep; REM, Rapid-eye-movement sleep; SaO2, Arterial oxygen saturation; SE, Sleep Efficiency. * p derived by paired Student’s t test.