Table 5 Comparison of frequency-related HRV parameters from the FFT analysis between intraoperative times (for CABG and TAVI) and non-surgical times (N = 32)
Variable | Intraoperative times | Non-surgical times | p value |
|---|---|---|---|
Mean ± SD | Mean ± SD | ||
FFT_VLF_pe (Hz) | 0.0289 ± 0.01430 | 0.03419 ± 0.0041 | 0.562 |
FFT_LF_pe (Hz) | 0.0899 ± 0.0152 | 0.0870 ± 0.0214 | 0.466 |
FFT_HF_pe (Hz) | 0.160 ± 0.0092 | 0.178 ± 0.0468 | 0.513 |
FFT_VLF_po (ms2) | 450.2 ± 817.59 | 152.5 ± 61.84 | 0.477 |
FFT_LF_po (ms2) | 1139.2 ± 585.32 | 1420.64 ± 582.01 | 0.030 |
FFT_HF_po (ms2) | 200.9 ± 139.69 | 411.3 ± 195.87 | < 0.001 |
FFT_Total_po (ms2) | 1791.4 ± 942.30 | 1985.6 ± 764.76 | 0.191 |
FFT_VLF_po% (%) | 18.3 ± 24.74 | 8.4 ± 3.41 | 0.926 |
FFT_LF_po% (%) | 69.9 ± 20.74 | 71.2 ± 5.73 | 0.184 |
FFT_HF_po% (%) | 11.7 ± 5.01 | 20.4 ± 5.11 | < 0.001 |
FFT_LF_po_nu (n.u.) | 86.06 ± 3.55 | 77.71 ± 5.53 | < 0.001 |
FFT_HF_po_nu (n.u.) | 13.88 ± 3.55 | 22.23 ± 5.51 | < 0.001 |
FFT_LF/HF | 6.7 ± 2.06 | 3.8 ± 1.27 | < 0.001 |