Skip to main content

Table 2 Bio-signals and autonomic parameters during Valsalva maneuver in 25 post-mTBI-patients and 29 healthy controls

From: Valsalva maneuver unveils central baroreflex dysfunction with altered blood pressure control in persons with a history of mild traumatic brain injury

Parameters Healthy controls Post-mTBI-patients Controls vs. patients
RRI phase II late [ms] 643.5 ± 115.4 633.40 ± 85.0 P = 0.86
RRI phase III [ms] 628.0 ± 108.5 613.3 ± 78.3 P = 0.58
RRI phase IV [ms] 1148.0 ± 160.8 1106.24 ± 208.4 P = 0.41
Valsalva-ratio 1.9 ± 0.4 1.8 ± 0.4 P = 0.46
Valsalva-ratio-time [s] 13.9 ± 3.8 13.7 ± 3.7 P = 0.83
BPsys phase I [mmHg] 166.6 ± 20.6 161.2 ± 13.7 P = 0.27
BPsys phase II early [mmHg] 110.0 ± 19.5 105.7 ± 19.8 P = 0.44
BPsys phase II late [mmHg] 141.0 ± 23.8 134.0 ± 24.2 P = 0.29
BPsys phase III [mmHg] 107.5 ± 17.5 101.1 ± 20.9 P = 0.25
BPsys phase IV [mmHg] 177.7 ± 26.6 177.4 ± 21.7 P = 0.76
BPdia phase I [mmHg] 88.8 ± 14.3 86.3 ± 11.2 P = 0.49
BPdia phase II early [mmHg] 66.8 ± 10.7 67.2 ± 12.44 P = 0.90
BPdia phase II late [mmHg] 89.8 ± 13.9 87.0 ± 15.7 P = 0.31
BPdia phase III [mmHg] 64.4 ± 9.3 63.9 ± 11.3 P = 0.88
BPdia phase IV [mmHg] 85.8 ± 10.5 86.4 ± 10.4 P = 0.84
90 %-BP-normalization-time [s] 12.6 ± 4.9 16.9 ± 7.1 P = 0.01
90 %-BP-normalization-velocity [mmHg/s] 3.8 ± 1.5 3.2 ± 1.5 P = 0.04
  1. Mean values ± standard deviation of maximum or minimum values of RR-intervals, systolic and diastolic blood pressure during the different phases of the Valsalva maneuver, as well as the Valsalva-ratios, Valsalva-ratio-times, 90 %-blood-pressure-normalization-times and 90 %-blood-pressure-normalization-velocities, in 25 patients with a history of mild TBI and 29 healthy controls. Significant differences (p < 0.05) between patients with a history of mTBI (post-mTBI-patients) and healthy participants are in italic and bold
  2. mTBI mild traumatic brain injury, RRI RR-interval, BPsys systolic blood pressure, BPdia diastolic blood pressure, BP blood pressure
\