Table 4.
Changes in PSG parameters for children with severe OSA following T&A (n = 34) ^.
| Parameter | Pre-T&A | Post-T&A | Change (95% CI) | p Value t |
|---|---|---|---|---|
| Total sleep time, min | 345.5 | 366.6 | +21.1 (−3.6 to 45.8) | 0.58 |
| Sleep efficiency, % | 80.0 | 90.0 | +10.0 (5.8 to 14.2) | <0.01 |
| REM duration, min | 48.9 | 71.0 | +22.1 (10.5 to 33.7) | 0.01 |
| Stage N1 duration, min | 32.1 | 22.3 | −9.8 (−16.7 to −2.9) | 0.37 |
| Stage N2 duration, min | 158.2 | 164.5 | +6.3 (−9.4 to 22.0) | 0.20 |
| Stage N3 duration, min | 106.4 | 117.6 | +11.2 (−5.5 to 27.9) | 0.47 |
| Arousal index | 32.7 | 14.1 | −18.6 (−21.9 to −15.3) | <0.01 |
| AHI, events/hr | 46.4 | 13.7 | −32.7 (−38.3 to −26.8) | <0.01 |
| SpO2 nadir, % | 79.9 | 88.5 | +8.6 (7.4 to 10.1) | <0.01 |
| Hypoventilation, no. (%) ^ | 19 (50.0) | 13 (52.0) | 0.57 c |
^ PSG parameters reported as mean values; t t test; c Chi-squared test. Abbreviations: AHI: apnea–hypopnea index; REM: rapid eye movement.