Comparison between subgroups of Eisenmenger syndrome patients
| Variable | ODI≥10 (n=10) | ODI<10 (n=15) | p Value |
|---|---|---|---|
| Age (years) | 24.4±8.5 | 25.7±10.5 | 0.8 |
| Haemoglobin (gm/dl) | 17.2±1.3 | 14.4±1.5 | 0.001 |
| Resting SpO2 (%) | 87.0±4.5 | 88.1±5.6 | 0.67 |
| 6 min distance (m) | 461.7±82.6 | 475.2±128.1 | 0.31 |
| 6 min walk SpO2 (%) | 76.5±8.8 | 80.3±5.7 | 0.38 |
| Pulmonary function tests (values % predicted) | |||
| FEV1 | 68.3±15.2 | 58.1±22.7 | 0.44 |
| FEV1/FVC | 91.5±10.6 | 91.5±28.5 | 0.22 |
| FEF(25–75) | 70.3±11.1 | 91.5±28.5 | 0.22 |
| TLC | 70.3±11.1 | 75.0±14.1 | 0.56 |
| DLCO | 74.0±1.7 | 65.5±2.1 | 0.08 |
| Polysomnogram variables | |||
| Total sleep time (min) | 403.2±111.7 | 378.0±131.2 | 0.74 |
| Sleep efficiency (%) | 95.3±4.3 | 94.1±7.1 | 0.89 |
| Apnoea–hypopnoea index | 2.9±5.0 | 3.7±5.2 | 0.82 |
All values mean±SD.
DLCO, diffusion capacity with carbon monoxide; FEF(25–75), forced expiratory flow between 25% and 75% of the vital capacity; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; ODI, oxygen drop index; SpO2, oxygen saturation by pulse oximetry; TLC, total lung capacity.