Table 3 Changes in sleep-disordered breathing and sleep characteristics
| Â | At baseline | At follow-up | p-value |
|---|---|---|---|
SDB, n (%) | 16 (57%) | 22 (79%) | 0.13 |
AHI, episodes/h | 11.4 (0.3; 44.1) | 18.6 (0.0; 69.0) | 0.005 |
Obstructive apnea index, episodes/h | 0.8 (0.0; 24.6) | 2.4 (0.0; 43.1) | 0.039 |
Central apnea index, episodes/h | 0.0 (0.0; 8.4) | 0.0 (0.0; 1.6) | 0.75 |
Mixed apnea index, episodes/h | 0.0 (0.0; 4.6) | 0.2 (0.0; 10.6) | 0.058 |
Hypopnea index, episodes/h | 7.8 (0.0; 27.6) | 14.7 (0.0; 33.1) | 0.009 |
Mean apnea duration, sec | 14.8 (0.0; 36.1) | 15.3 (0.0; 36.7) | 0.088 |
AHI in NREM sleep, episodes/h | 5.4 (0.0; 45.0) | 17.1 (0.0; 67.8) | 0.004 |
AHI in REM sleep, episodes/h | 6.8 (0.0; 56.8) | 26.1 (0.0; 73.9) | 0.002 |
AHI in supine position, episodes/h | 19.6 (0.0; 96.1) | 22.7 (0.0; 116.6) | 0.15 |
Desaturation index, episodes/h | 12.7 (0.50; 46.7) | 21.0 (0.0; 70.7) | 0.012 |
SpO2minimum, % | 84.0 (67.0; 93.0) | 81.0 (66.0; 91.0) | 0.015 |
SpO2average, % | 94.2 (89.4; 97.0) | 92.0 (88.5; 96.0) | 0.002 |
Hypoxia burden (Time SpO2 < 90% of total sleep time), % | 1.1 (0.0; 52.6) | 7.5 (0.0; 67.1) | 0.017 |
TST, min | 417 (282; 516) | 412.5 (180; 546) | 0.018 |
Sleep efficiency, % | 82.3 (59.1; 93.6) | 77.2 (27.4; 92.6) | 0.70 |
WASO, min | 57.7 (19.0; 204.5) | 83.3 (11.5; 475.8) | 0.28 |
Sleep latency, min | 16.5 (1.5; 106.0) | 21.0 (2.3; 95.0) | 0.33 |
S1 sleep stage/TST, % | 8.0 (3.2; 30.8) | 8.9 (3.1; 41.1) | 0.42 |
S2 sleep stage/TST, % | 47.5 (33; 69) | 53.2 (32.5; 72.0) | 0.007 |
S3 sleep stage/TST, % | 23.4 (0.0; 33.9) | 16.8 (1.3; 53.1) | 0.026 |
REM sleep stage/TST, % | 20.3 (0.0; 29.5) | 18.0 (0.0; 29.2) | 0.17 |
Microarousal index, episodes/h | 7.7 (0.0; 26.3) | 13.2 (1.9; 42.4) | 0.061 |
Awakenings, episodes | 23 (14; 63) | 26 (10; 62) | 0.091 |
Limb movement index, episodes/h | 7.5 (0.0; 105.2) | 10.9 (0.0; 71.4) | 0.13 |
Periodic limb movement index, episodes/h | 7.6 (0.0; 88.4) | 0.0 (0.0; 63.6) | 0.86 |