A study to evaluate the accuracy of capillary glucose measurement versus colorimetry glucose measurment as methods for determining blood glucose concentration in critically ill patients.

The objective of this study was to assess the accuracy and clinical agreement between arterial glucose concentration and capillary or central venous measures. A sole set of tests per patient was obtained from all patients in about 5 minutes. Capilary strip, arterial strip, venous and arterial laboratory dosages were performed. Arterial and central venous lines were forcefully used for the samples collection. The catheters lumen was washed with 10mL distilled water, followed by aspiration of 5mL fluids to be disposed of before the collection. Arterial and venous glucose were performed in the Olympus Au640e device, hexochinase G-6-PDHA reagent. For strip determination of glycemia blood from finger pulp lanced with a 26G needle was used. The glucometer available at the institution was the Medisense – FreeStyle Optium® (Abbott Laboratories, USA).