Which of the following is not a component of SIRS

Systemic inflammatory response syndrome (SIRS) * Defined by the presence of two or more of Respiratory rate > 20/min Hea rate > 90/min White blood count > 12 x 10^9/L or < 4 x 10^9/L Temperature > 38.0degC or < 36.0degC PaCO2 < 4.3 kPa (< 32 mmHg) or ventilated * A wide pulse pressure, e.g. 115/42 mmHg, may be an early pointer to systemic sepsis * Cause may be infection or a non-infective condition, e.g. pancreatitis, trauma, cardiopulmonary bypass, vasculitis etc. * Hypothermia and septic neutropenia indicate more severe infection DAVIDSON&;S 22nd EDITION;PAGE NO 184