Table 4. Changes in BRS and Hemodynamic Parameters between the First and Last 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)* | 1.11±11.93 | 2.79±4.55 | 0.489 |
| MBP (mm Hg) | -0.6±10.1 | 0.8±11.7 | 0.767 |
| HR (bpm) | 0.2±9.6 | 1.2±4.2 | 0.967 |
| SVR (dyn·s/cm5) | -29.3±363.7 | -34.9±605.4 | 0.880 |
| After upright posture | |||
| BRS (ms/mm Hg)† | 0.71±3.56 | 0.76±1.94 | 0.772 |
| MBP (mm Hg)‡ | -0.5±8.5 | -4.2±8.4 | 0.357 |
| HR (bpm)‡ | -1.6±8.1 | 3.5±2.5 | 0.006 |
| SVR (dyn·s/cm5)‡ | -47.7±299.3 | -303.1±588.4 | 0.390 |
| Before the development of syncope | |||
| BRS (ms/mm Hg)§ | -2.37±4.35 | -1.25±3.21 | 0.656 |
| MBP (mm Hg)‡ | 7.9±13.7 | -0.7±6.7 | 0.171 |
| HR (bpm)‡ | 16.8±20.4 | 14.1±18.5 | 0.776 |
| SVR (dyn·s/cm5)‡ | -88.3±396.7 | -171.3±580.3 | 0.670 |
BRS, baroreflex sensitivity; MBP, mean blood pressure; HR, heart rate; SVR, systemic vascular resistance.
Data are presented as mean±SD.
*There was a missing value in one patient in the tilt training non-responder group, †There was a missing value in three patients in the tilt training responder group, ‡There was a missing value in one patient in the tilt training responder group, §There was a missing value in six patients in the tilt training responder group.