Table 2.
Twenty-four-hour time-domain (non-spectral) and 5-minute spectral analysis results by study group.
| TCA intoxication (n = 20) |
Control (n = 20) |
P | |
|---|---|---|---|
| Mean heart rate (per minute) | 148 (66–224) |
78 (55–102) |
<0.05 |
| SDNN (ms) | 104 (94–117) |
146 (134–170) |
0.000 |
| SDANN (ms) | 27 (25–44) |
31 (26–39) |
P > 0.05 |
| RMSDD (ms) | 46 (41–64) |
65 (57–102) |
0.049 |
| SDNN index | 60 (51–70) |
81 (72–96) |
0.002 |
| pNN50 (%) | 11.3 (8.9–20.9) |
24.6 (20.8–33.4) |
0.005 |
|
| |||
| Frequency-domain (spectral) analysis | |||
|
| |||
| VLF (ms2) | 772 (271–3873) |
806 (698–1046) |
P > 0.05 |
| nLF (nu) | 27 (24–35) |
17 (11–24) |
0.012 |
| nHF (nu) | 6.9 (5.4–8.7) |
12.1 (10.7–22) |
0.001 |
| LF/HF | 4.6 (1.1–14.4) |
0.96 (0.8–2) |
0.001 |
*Values are given as median (95% CI).