Table 5.
Respiratory Events (Apneas and Hypopneas) during Polysomnography
| ESRD | Control | p value | |
|---|---|---|---|
| Obstructive | |||
| Events (/h) | 32.8 ± 22.9 | 41.3 ± 26.4 | 0.005 |
| Events occurring in REM (/h) | 35.2 ± 29.0 | 42.1 ± 25.6 | 0.035 |
| Events occurring in NREM (/h) | 31.6 ± 24.4 | 40.3 ± 28.5 | 0.007 |
| % of total events | 81 ± 27 | 95 ± 13 | 0.002 |
| Central | |||
| Events (/h) | 4.9 ± 8.5 | 1.4 ± 4.1 | 0.001 |
| Events occurring in REM (/h) | 1.6 ± 5.0 | 0.8 ± 3.2 | NS |
| Events occurring in NREM (/h) | 5.3 ± 9.2 | 1.4 ± 4.4 | 0.001 |
| % of total events | 9.4 ± 12.9 | 3.0 ± 7.5 | 0.002 |
| Mixed | |||
| Events (/h) | 5.4 ± 12.3 | 1.6 ± 6.4 | 0.01 |
| Events occurring in REM (/h) | 5.1 ± 13.3 | 1.0 ± 5.0 | 0.01 |
| Events occurring in NREM (/h) | 5.4 ± 12.7 | 1.7 ± 6.7 | 0.014 |
| % of total events | 8.2 ± 16.5 | 2.5 ± 8.4 | 0.002 |
| Total | |||
| Events (/h) | 44.2 ± 27.7 | 44.2 ± 27.6 | NS |
| Events occurring in REM (/h) | 43.2 ± 29.7 | 43.9 ± 26.0 | NS |
| Events occurring in NREM (/h) | 43.4 ± 29.6 | 43.4 ± 29.9 | NS |
| Events while supine (/h) | 61.1 ± 33.8 | 57.9 ± 36.9 | NS |
| Events while non-supine (/h) | 34.5 ± 31.4 | 35.1 ± 30.3 | NS |
ESRD = end-stage renal disease. Data are mean ± standard deviation.