Fig. 1From: The incretin effect in critically ill patients: a case–control studyStudy design. Glucose (50 mg/ml, 25 g in total) was infused intravenously (i.v.) for 150 minutes in the control subjects and for 300 minutes in the critically ill patients. Circle indicates blood sampled for analysis. Square indicates a continous intervention. BP blood pressure, EDTA ethylenediaminetetraacetic acid, IVGI intravenous glucose infusion, OGTT oral glucose tolerance testBack to article page