Table 3. BRS and Hemodynamic Parameters during the First Session of Tilt Training.
| Tilt training responder group (n=52) | Tilt training non-responder group (n=5) | p value | |
|---|---|---|---|
| Supine position | |||
| BRS (ms/mm Hg) | 18.17±10.09 | 7.99±5.84 | 0.008 |
| MBP (mm Hg) | 77.6±10.1 | 92.6±26.1 | 0.186 |
| HR (bpm) | 63.5±8.9 | 64.8±15.0 | 0.732 |
| SVR (dyn·s/cm5) | 1148.8±257.5 | 1138.1±536.6 | 0.250 |
| After upright posture | |||
| BRS (ms/mm Hg) | 6.78±4.02 | 4.74±1.88 | 0.120 |
| MBP (mm Hg)* | 77.6±10.3 | 90.9±11.8 | 0.016 |
| HR (bpm)* | 81.1±12.0 | 76.1±13.6 | 0.339 |
| SVR (dyn·s/cm5)* | 1269.1±237.3 | 1648.2±449.1 | 0.091 |
| Before the development of syncope | |||
| BRS (ms/mm Hg) | 5.89±4.17 | 5.03±3.07 | 0.540 |
| MBP (mm Hg)* | 70.4±9.3 | 81.4±12.0 | 0.042 |
| HR (bpm)* | 98.8±20.5 | 85.6±8.5 | 0.164 |
| SVR (dyn·s/cm5)* | 1210.7±277.2 | 1548.3±409.7 | 0.065 |
| BRS value ≥8.945 in the supine position, n (%) | 45 (86.5) | 1 (20.0) | 0.004 |
BRS, baroreflex sensitivity; MBP, mean blood pressure; HR, heart rate; SVR, systemic vascular resistance.
Data are presented as mean±SD or number (%).
*There was a missing value in one patient in the tilt training responder group.