Skip to main content

Table 1 Systolic arterial pressure and pulse interval indices of variability in time and frequency domains

From: Short-term effect of ligature-induced periodontitis on cardiovascular variability and inflammatory response in spontaneously hypertensive rats

  WKY Sham WKY PD SHR Sham SHR PD
Systolic arterial pressure
 SD (mmHg) 4.8 ± 0.3 5.2 ± 0.2 8.8 ± 0.3* 6.6 ± 0.7*
 LF (mmHg2) 2.7 ± 0.8 2.7 ± 0.4 15.8 ± 0.7* 12.3 ± 1.5*
Pulse interval
 SDNN 7.9 ± 0.9 8.5 ± 0.6 7.9 ± 0.7 7.0 ± 1.0
 RMSSD 5.8 ± 0.6 6.6 ± 0.4 4.9 ± 0.2* 4.9 ± 0.8*
 LF (nu) 14.3 ± 1.4 16.5 ± 2.3 22.4 ± 2.0* 20.8 ± 1.7*
 HF (ms2) 7.3 ± 1.5 8.8 ± 0.9 6.3 ± 0.6 7.3 ± 2.3
  1. Values (means ± SEM) of variability indices of systolic arterial pressure and pulse interval (PI) variability in time and frequency domain. SD: standard deviation of AP values; SDNN: SD of normal-to-normal values of PI; RMSSD: square root of the mean of the sum of the square of differences between successive values of pulse interval; LF and HF: power of AP or PI spectra at low- (0.2 to 0.8 Hz) and high-frequency (0.8 to 3 Hz), respectively; nu: normalized units. *P < 0.05 compared to sham operated WKY. #P < 0.05 compared to sham operated SHR. Wistar Kyoto rats without periodontal disease (WKY + Sham, n = 7); Wistar Kyoto rats with periodontal disease (WKY + PD, n = 10); Spontaneously hypertensive rats without periodontitis (SHR + Sham, n = 7); Spontaneously hypertensive rats with periodontitis (SHR + PD, n = 6)