5.4. Correlation of cardiovascular autonomic reflex tests and heart rate variability analysis (Study IV)

There was a strong correlation between HR responses in breathing tests and several traditional measures of HRV, whereas the correlation was weak between dynamic measures of HRV, the HR responses of the cardiovascular autonomic reflexes and traditional measures of HRV (Table 15).

Table 15. The correlation of cardiovascular reflex tests and heart rate variability analysis in patients with temporal lobe epilepsy.

Measures of HRVSD of RR intervalMax-Min RatioValsalva Ratio30:15 Ratio
RRI0.24-0.06-0.09-0.03
SD0.64**0.45*0.240.002
SDNN0.180.35*0.25-0.29
VLF0.63**0.44*0.270.08
LF0.64**0.40*0.320.17
HF0.58**0.340.43*0.04
SD10.60**0.41*0.40*0.05
SD20.61**0.42*0.25-0.03
α20.120.190.270.14
ApEn0.340.290.170.20
Slope-0.32-0.19-0.15-0.10
For abbreviations see page 66. Values are mean (± SD). *, p < 0.05, **, p < 0.001.