Table 1.
Clinical manifestation and scores of frequency-/time-domain HRV variables during dental therapy.
| Therapy onset |
Inhale onset |
Midazolam administration |
Local anesthesia |
Teeth extraction |
Inhale end |
Reclined position |
Upright position |
Atropine administration and therapy end |
|
|---|---|---|---|---|---|---|---|---|---|
| Posture | Sitting | Supine | Supine | Supine | Supine | Supine | Supine | Sitting | Supine |
| Nausea | − | − | − | − | − | − | − | + | − |
| S/DBP1 (mmHg) | 106/42 | 110/55 | 108/50 | 131/57 | 135/69 | 115/50 | 108/49 | 65/25 | 119/72 |
| Mean HRT2 (bpm) | 49 | 47 | 56 | 70 | 49 | 52 | 56 | 51 | 81 |
| SDNN3 (ms) | 54.0 | 67.8 | 77.7 | 193.0 | 73.7 | 81.4 | 71.0 | 86.8 | 68.2 |
| RMSSD4 (ms) | 71.2 | 93.0 | 84.5 | 78.5 | 88.8 | 84.5 | 70.3 | 85.6 | 16.8 |
| PSI5 | 11.6 | 13.3 | 7.0 | 7.9 | 7.2 | 7.2 | 10.2 | 7.2 | 27.1 |
| ApEn6 | 0.866 | 0.757 | 0.872 | 0.273 | 0.819 | 0.875 | 0.946 | 0.854 | 0.544 |
| TP7 (ms2) | 1530.0 | 2948.7 | 5477.9 | 33920.5 | 4196.3 | 3760.6 | 2141.8 | 5215.6 | 1620.2 |
| VLF8 (ms2) | 757.9 | 1359.3 | 4078.6 | 31187.1 | 1583.1 | 1540.3 | 234.7 | 1695.0 | 1138.8 |
| LF9 (ms2) | 300.0 | 238.8 | 271.9 | 1919.1 | 707.2 | 1264.9 | 1416.1 | 2281.5 | 426.9 |
| HF10 (ms2) | 472.0 | 1350.5 | 1127.4 | 814.3 | 1906.0 | 955.4 | 491.0 | 1239.1 | 54.5 |
| LF norm11 (nu) | 38.9 | 15.0 | 19.4 | 70.2 | 27.1 | 57.0 | 74.3 | 64.8 | 88.7 |
| HF norm12 (nu) | 61.1 | 85.0 | 80.6 | 29.8 | 72.9 | 43.0 | 25.7 | 35.2 | 11.3 |
| LF/HF13 | 0.636 | 0.177 | 0.241 | 2.357 | 0.371 | 1.324 | 2.884 | 1.841 | 7.833 |
HRV: heart rate variability. 1Systolic/Diastolic blood pressure. 2Heart rate. 3Standard deviation of all NN intervals. 4Square root of the mean squared differences of successive NN intervals. 5Physical stress index. 6Approximate entropy. 7Total power. 8Very low frequency. 9Low frequency. 10High frequency. 11Normalized low frequency. 12Normalized high frequency. 13Low-frequency/high-frequency ratio.