TABLE 2.
HRV, BPV and cardiac coherence indices calculated in CVRanalysis program.
| RR series | SBP, MBP, DBP | ||
|---|---|---|---|
| Index | Unit | Index | Unit |
| Time domain Eckberg (1983), Fouad et al. (1984), Cook et al. (1991), Kleiger et al. (1995), Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology (1996), Rajendra Acharya et al. (2006) | |||
| Mean RR | ms | Mean BP | mmHg |
| Mean HR | bpm | ||
| NN20 | n | ||
| pNN20 | % | ||
| NN30 | n | ||
| pNN30 | % | ||
| NN50 | n | ||
| pNN50 | % | ||
| SDNN | ms | SD | mmHg |
| rMSSD | ms | rMSSD | mmHg |
| Geometrical Malik et al. (1989), Malik (1995), Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology, (1996) | |||
| Triangular Index | — | Triangular Index | — |
| TINN | ms | TINN | mmHg |
| X | ms | X | mmHg |
| Y | n | Y | mmHg |
| M | ms | M | mmHg |
| N | ms | N | mmHg |
| Frequency domain Akselrod et al. (1981), Pagani et al. (1984), Akselrod et al. (1985), Pomeranz et al. (1985), Pagani et al. (1986), Saul et al. (1990), Bigger et al. (1992), Triedman and Saul, (1994), Malliani et al. (1995), Keselbrener et al. (1996), Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology, (1996), Eckberg (1997), Cooley et al. (1998), Pichot et al. (1999), Wiklund et al. (2002), Belova et al. (2007), Billman (2013), Billman et al. (2015) | |||
| Ptot* | ms2 | Ptot* | mmHg2 |
| VLF* | ms2 | VLF* | mmHg2 |
| LF* | ms2 | LF* | mmHg2 |
| HF* | ms2 | HF* | mmHg2 |
| LF/HF* | — | LF/HF* | — |
| LFnu* | % | LFnu* | % |
| HFnu* | % | HFnu* | % |
| Empirical mode decomposition Balocchi et al. (2004) | |||
| pLF1 | ms2 | pLF1 | mmHg2 |
| pLF2 | ms2 | pLF2 | mmHg2 |
| pHF1 | ms2 | pHF1 | mmHg2 |
| pHF2 | ms2 | pHF2 | mmHg2 |
| IMAI1 | — | IMAI1 | — |
| IMAI2 | — | IMAI2 | — |
| Poincaré plot Kamen et al. (1996), Balocchi et al. (2006) | |||
| Centroïd | ms | Centroïd | mmHg |
| SD1 | ms | SD1 | mmHg |
| SD2 | ms | SD2 | mmHg |
| SD1/SD2 | — | SD1/SD2 | — |
| SD1nu | % | SD1nu | % |
| SD2nu | % | SD2nu | % |
| Fractal Katz (1988), Peng et al. (1995), Huikuri et al. (2000), Rajendra Acharya et al. (2006), Maestri et al. (2007b) | |||
| α1DFA | — | α1DFA | — |
| α2DFA | — | α2DFA | — |
| HDFA | — | HDFA | — |
| HHiguchi | — | HHiguchi | — |
| HKatz | — | HKatz | — |
| Hurst | — | Hurst | — |
| Moments Yilmaz and Yildiz, (2010), Wolf et al. (1985) | |||
| Skewness | — | Skewness | — |
| Kurtosis | — | Kurtosis | — |
| Largest Lyapunov exponent | — | Largest Lyapunov exponent | — |
| Entropy Pincus (1991), Porta et al. (1998), Richman and Moorman, (2000), Porta et al. (2001), Ferrario et al. (2004), Maestri et al. (2007a), Porta et al. (2007) | |||
| Approximate entropy (AppEn) | — | Approximate entropy | — |
| Sample entropy (SampEn) | — | Sample entropy | — |
| Shanon Entropy (SE) | — | Shanon Entropy (SE) | — |
| Conditional Entropy (CE) | — | Conditional Entropy (CE) | — |
| Corrected CE (CCE) | — | Corrected CE (CCE) | — |
| Normalized CCE (NCCE) | — | Normalized CCE (NCCE) | — |
| ρ | — | ρ | — |
| Lempel-Ziv complexity | — | Lempel-Ziv complexity | — |
| Symbolic dynamic Porta et al. (2001), Guzzetti et al. (2005), Porta et al. (2007), Dantas et al. (2015) | |||
| 0V | — | 0V | — |
| 0V% | % | 0V% | % |
| 1V | — | 1V | — |
| 1V% | % | 1V% | % |
| 2LV | — | 2LV | — |
| 2LV% | % | 2LV% | % |
| 2UV | — | 2UV | — |
| 2UV% | % | 2UV% | % |
| MP | — | MP | — |
| MP% | % | MP% | % |
| Cardiac coherence McCraty 2009, Russo et al. (2017) | |||
| HR coherence ratio | — | ||
| F(peak) | Hz | ||
| F(peak) | cycle/min | ||
| F(peak) | s | ||
*Indices also calculated in the time-frequency domain (wavelet analysis).