Table 2.
cBRS and sBRS as a function of the method, sign of AP variation and title table inclination.
| Index | T0 | T20 | T30 | T40 | T60 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| ΔAP+ | ΔAP- | ΔAP+ | ΔAP- | ΔAP+ | ΔAP- | ΔAP+ | ΔAP- | ΔAP+ | ΔAP- | |
| cBRSSEQ [ms⋅mmHg-1] | 21.35 ± 12.08 | 23.39 ± 14.55 | 16.35 ± 6.78 | 23.46 ± 9.25 | 14.38 ± 5.91 | 17.24 ± 10.29 | 10.91 ± 5.18∗ | 10.47 ± 4.83∗ | 9.32 ± 6.21∗ | 6.69 ± 3.39#∗ |
| cBRSPRSA [ms] | 12.54 ± 7.05 | 12.06 ± 6.55 | 11.30 ± 6.97 | 10.43 ± 5.93 | 9.18 ± 6.23 | 8.64 ± 5.9 | 5.97 ± 3.43∗ | 5.64 ± 3.02∗ | 2.62 ± 2.73∗ | 2.54 ± 2.5∗ |
| cBRSnPRSA [ms⋅mmHg-1] | 6.15 ± 4.79 | 6.27 ± 4.34 | 5.43 ± 2.86 | 5.74 ± 2.80 | 4.52 ± 2.81 | 4.54 ± 2.71 | 2.56 ± 1.39∗ | 2.75 ± 1.65∗ | 1.17 ± 1.59∗ | 1.16 ± 1.42∗ |
| sBRSSEQ [bursts⋅s-1⋅mmHg-1] | -0.072 ± 0.038 | -0.121 ± 0.089# | -0.073 ± 0.019 | -0.101 ± 0.046 | -0.077 ± 0.033 | -0.085 ± 0.028 | -0.073 ± 0.020 | -0.099 ± 0.034 | -0.064 ± 0.017 | -0.067 ± 0.035 |
| sBRSPRSA [bursts⋅s-1] | -0.011 ± 0.010 | -0.012 ± 0.011 | -0.017 ± 0.011 | -0.014 ± 0.011 | -0.019 ± 0.009 | 0.018 ± 0.011 | -0.020 ± 0.014 | -0.022 ± 0.014 | -0.016 ± 0.015 | -0.015 ± 0.015 |
| sBRSnPRSA [bursts⋅s-1⋅mmHg-1] | -0.008 ± 0.009 | -0.009 ± 0.011 | -0.012 ± 0.009 | -0.010 ± 0.009 | -0.014 ± 0.007 | -0.014 ± 0.009 | -0.013 ± 0.011 | -0.016 ± 0.012 | -0.010 ± 0.008 | -0.009 ± 0.009 |
AP, arterial pressure; BR, baroreflex; cBR, cardiac BR; sBR, sympathetic BR; cBRS, cBR sensitivity; sBRS, sBR sensitivity; ΔAP+, positive AP variation; ΔAP-, negative AP variation; SEQ, sequence method; PRSA, phase rectified signal averaging method; nPRSA, normalized PRSA. Data are presented as mean ± standard deviation. The symbol ∗ indicates p < 0.05 versus T0 within the same type of ΔAP variation. The symbol # indicates p < 0.05 versus ΔAP+ within the same experimental condition. ΔAP is intended as ΔSAP for the computation of cBRS and ΔDAP for the computation of sBRS.