Table 1. Vital signs and their definitions.

Vital sign	Definition
Hypoxia	Oxygen saturation < 95%
Hypotension	Systolic blood pressure < 100 mm Hg
Hypothermia	Temperature < 36.5°C
Hypertension	Systolic blood pressure > 160 mm Hg
Bradycardia	Heart rate < 60/min
Tachycardia	Heart rate >100/min