Results of overnight home pulse oximetry in 104 patients and 21 matched controls
| Normal controls (n = 21) | Heart failure (n = 104) | p value | |
|---|---|---|---|
| Age | 65.9 (1.4) | 64.1 (0.9) | NS |
| Body mass index (kg/m2) | 25.6 (0.6) | 26.7 (0.3) | NS |
| Ejection fraction | 0.68 (0.03) | 0.41 (0.02) | < 0.005 |
| Oximetry data | |||
| Dip frequency (per hour) | 4.8 (0.6) | 10.3 (0.9) | < 0.005 |
| Mean Sao 2(%) | 95.9 (0.2) | 94.0 (0.2) | < 0.005 |
| Minimum Sao 2(%) | 89.6 (0.9) | 84.5 (0.6) | < 0.005 |
| Oximetry time with Sao 2 ⩽ 90% (%) | 0.2 (0.1) | 5.7 (1.2) | < 0.005 |
| Oximetry analysis | |||
| Normal recording | 15 | 46 | |
| Equivocal recording | 6 | 35 | < 0.05 |
| Abnormal recording | 0 | 23 | |
All results given as mean (SEM).
Sao 2, oxygen saturation by pulse oximetry.