12 February 2022: Clinical Research
Autonomic Tone Variations Prior to Onset of Paroxysmal Atrial Fibrillation
Xia Zhong 1ABCDEF* , Huachen Jiao 2ACDFG* , Jinchao Gao 3ABCD , Jing Teng 1DEFDOI: 10.12659/MSM.934028
Med Sci Monit 2022; 28:e934028
Table 3 Variations in HRV parameters before PAF onset in sympathetic group.
| Parameters | 60 min | 45 min | 30 min | 15 min | Onset | p |
|---|---|---|---|---|---|---|
| SDNN( ms) | 54.40±43.41 | 53.90±32.73 | 55.80±35.62 | 58.60±37.55 | 70.80±33.19 | 0.57 |
| RMSSD (ms) | 65.10±54.67 | 66.60±50.66 | 72.30±62.19 | 85.90±63.93 | 86.15±45.51 | 0.61 |
| PNN50 (%) | 7.19±7.19 | 5.59±5.17 | 6.49±6.82 | 5.99±6.37 | 5.71±4.90 | 0.92 |
| LF (ms) | 261.68±258.34 | 336.17±379.29 | 298.36±290.24 | 388.81±418.65 | 573.53±493.01 | 0.06* |
| HF (ms) | 211.61±293.96 | 230.45±315.10 | 341.56±491.51 | 324.15±417.05 | 293.27±295.23 | 0.75 |
| LF/HF | 1.66±1.39 | 2.24±2.29 | 1.77±2.67 | 2.04±2.26 | 2.47±1.70 | 0.74 |
| Data are presented as mean±SD. SDNN – standard deviation of all BBI values; RMSSD – root mean square of successive BBI differences; NN50 – NN intervals >50 ms different from previous (NN) for period of interest; PNN50 – percentage of NN-interval differences greater than 50 ms; LF – low-frequency band 0.04–0.15 Hz. HF – high-frequency band 0.15–0.40 Hz; LF/HF – quotient of LF and HF. * Significant. | ||||||