Table 1.

Criteria for unwanted events

Inadequate anaesthesia
Hypertension	MAP > 120% of baseline or MAP ≥ 100 mmHg
Tachycardia	HR > 100 bpm
Somatic arousal	Coughing, chewing, grimacing, breathing against ventilator
Somatic response	Gross movement of extremities
Hypotension	MAP < 80% of baseline or MAP < 60 mmHg
Bradycardia	HR < 80% of baseline or HR < 45 bpm

Hypotension or bradycardia. The duration of the change needed to be clinically relevant to be counted. For heart rate, duration must be more than 30 s, and for noninvasive blood pressure, two consecutive measurements (3-min pause between measurements). HR, heart rate; MAP, mean arterial pressure. Adapted from¹⁸.