Table 2.
Mean ± standard deviation for averaged parasympathetic tone activity (PTAm), heart rate (HR), mean arterial pressure (MAP), and bispectral index (BIS) during PTAm-drops.
| PTAm-Drop | |||
|---|---|---|---|
| Variables | Pre-Stimulus | 1 min | 2 min |
| PTAm (dimensionless) | 64 ± 22 | 35 ± 14* | 37 ± 17* |
| HR (beats/min) | 85 ± 14 | 88 ± 14 | 84 ± 13 |
| MAP (mmHg) | 78 ± 15 | 89 ± 14* | 88 ± 13* |
| BIS (dimensionless) | 56 ± 8 | 55 ± 8 | 54 ± 10 |
Mean ± standard deviation for averaged parasympathetic tone activity (PTAm) (dimensionless), heart rate (HR) (beats/min), mean arterial pressure (MAP) (mmHg), and bispectral index (BIS) (dimensionless), before (pre-stimulus) and 1 and 2 min after any of the surgical stimuli when PTAm decreased by ≥20% with respect to the pre-stimulus value (PTAm-drop). * Statistically different from pre-stimulus (p < 0.05).