Table 2.
Systolic blood pressure variability in the time and frequency domains.
| Supine | Standing | Rhythmic breathing | |
|---|---|---|---|
| Mean SBP (mmHg) | 108 | 107 | 109 |
| SD | 4.8 (normal: 5.6 ± 2.1) | 3.1 (normal: 5.7 ± 1.4) | 7.0 (normal: 7.1 ± 1.6) |
| Range | 22 (normal: 28.8 ± 8.4) | 18 (normal: 30.7 ± 7.7) | 32 (normal: 35.9 ± 6.1) |
| Max SBP | 122 | 117 | 128 |
| Min SBP | 100 | 99 | 96 |
| Max/min | 1.2 (normal: 1.3 ± 0.1) | 1.1 (normal: 1.3 ± 0.1) | 1.3 (normal: 1.4 ± 0.1) |
| VC (%) | 4.5 (normal: 5.4 ± 2.3) | 2.9 (normal: 5.3 ± 1.3) | 6.4 (normal: 6.8 ± 2.0) |
| LF total power (normalized) | 9.4 (normal: 6.7 ± 2.8) | 12.9 (normal: 6.9 ± 2.9) | 4.1 (normal: 6.4 ± 2.2) |
| HF total power (normalized) | 7.3 (normal: 3.9 ± 2.4) | 10.2 (normal: 3.8 ± 2.2) | 1.0 (normal: 2.6 ± 1.5) |
| SBV | 1.3 (normal: 2.0 ± 0.7) | 1.3 (normal: 2.2 ± 0.8) | 4.2 (normal: 2.7 ± 0.7) |
Normal values for our laboratory in 30 healthy controls.