Table 6.
Twenty-four hour ambulatory hemodynamics and night-time heart rate variability
| Variable | First month visit 1 | Follow-up visit 2 |
|---|---|---|
| HR (bpm) | ||
| 24-hr | 67.3 ± 10.6 | 70.1 ± 10.3 |
| Day | 70.6 ± 11.7 | 73.3 ± 10.5 |
| Night | 58.6 ± 8.8 | 60.3 ± 9.8 |
| SBP (mmHg) | ||
| 24-hr | 118.8 ± 11.7 | 119.4 ± 8.7 |
| Day | 121.7 ± 11.3 | 121.2 ± 7.6 |
| Night | 110.0 ± 13.5 | 109.4 ± 12.3 |
| DBP (mmHg) | ||
| 24-hr | 71.3 ± 8.6 | 71.3 ± 8.0 |
| Day | 75.1 ± 8.9 | 75.6 ± 8.4 |
| Night | 60.4 ± 8.9 | 59.1 ± 6.8 |
| MAP (mmHg) | ||
| 24-hr | 86.7 ± 8.7 | 86.4 ± 7.0 |
| Day | 90.1 ± 8.5 | 91.1 ± 8.1 |
| Night | 76.8 ± 9.3 | 75.4 ± 7.4 |
| Night-time HRV | ||
| Mean NN | 1114.3 ± 179.8 | 1009.1 ± 158.5 |
| SDNN (ms) | 131.0 ± 24.8 | 150.0 ± 85.5 |
| RMSSD (ms) | 66.6 ± 22.8 | 70.3 ± 59.6 |
| LF (ms2) | 869.5 ± 695.2 | 906.3 ± 972.4 |
| HF (ms2) | 721.0 ± 585.9 | 976.4 ± 1705.3 |
| LFnu% | 54.4 ± 10.1 | 58.2 ± 10.5 |
| HFnu% | 45.6 ± 10.1 | 41.8 ± 10.5 |
| LF:HF ratio | 1.31 ± 0.62 | 1.53 ± 0.59 |
Data are presented as mean ± SD. HR, heart rate; SBP, systolic blood pressure; DBP, diastolic blood pressure; MAP, mean arterial pressure; HRV, heart rate variability. LFnu% is derived from LF/LF+HF and HFnu% is derived from HF/LF+HF as described in the text.