Table 1.
Individual nociception monitor characteristics
| Monitor | Manufacturer | Autonomic input variables | Index | Optimal range/cut off |
|---|---|---|---|---|
| SPI | GE Healthcare |
Pulse beat interval Pulse wave amplitude |
0–100 | 20–50 |
| ANI | MDoloris Medical Systems | Heart rate variability | 0–100 | 50 |
| NOL | Medasense |
Heart rate and heart rate variability Pulse wave amplitude Skin conductance |
0–100 | 10–25 |
| CARDEAN | Alpha-2 |
Blood pressure Heart rate |
0–100 | 60 |
| Algiscan | ID Med | Pupil diameter | NA | Pupil diameter increase > 30% |
SPI surgical plethysmographic index, ANI analgesia nociception index, NOL nociception level index, NA not available