Risk factors and optimal predictive scoring system of mortality for children with acute paraquat poisoning

Table 2 The pediatric early warning score

	0	1	2	3
Behavior	Playing; alert; appropriate; at baseline	Sleeping; fussy but consolable	Irritable/inconsolable	Lethargic; confused; reduced response to pain
Cardiovascular status	Pink cap refill 1-2 s	Gray; cap refill 3 s	Gray; cap refill 4 s; tachycardia of 20 beats/min above the normal rate	Gray; mottled; cap refill 5 s; tachycardia of 30 beats/min above the normal rate; bradycardia
Respiratory status	Within normal parameters	Greater than 10 breaths/min above normal parameters; accessory muscle use; 30% FiO2; 3 liters/minute	Greater than 20 breaths/min above normal parameters; retractions; 40% FiO2; 6 liters/minute; tracheostomy- and ventilator- dependent	Below normal parameters with retractions; grunting; 50% FiO2; 8 liters/minute

FiO₂: Fraction of inspiration O₂.