Fig. 1From: Pyrexia: aetiology in the ICUApproach to determining the aetiology of elevated body temperature in immunocompetent patients admitted to adult ICUs. Example diagnoses are included in each of the terminal boxes. aOften associated with a temperature of 41.0 °C or greater. bOnset will be later for a small percentage of patients with “central pyrexia”, otherwise this most commonly occurs early during ICU admission [45, 51]Back to article page