One of the important factors influencing the prognosis of a critically ill patient is whether glucose homoeostasis can be maintained. Implementation of a strict glycaemic control protocol in the intensive care unit is possible, but the risk of hypoglycaemia should be minimised.
Blood glucose concentration measured by a personal or laboratory glucometer is static cross-sectional information that does not indicate the dynamics of glycaemic change. Even in the case of a multipoint glycaemic profile, much valuable information will not be noted.
Moreover, frequent sampling can be stressful for patients and represents additional workload for medical staff.