Perioperative control of bodily substances plays an important role in ensuring speedy recovery of patients. Perioperative blood glucose control, for example, has been proven to reduce morbidity and mortality rates in hospitalized patients, particularly after cardiac surgery. Continuous surveillance is crucial to ensure that the blood glucose levels are not too high (hyperglycemia) with its associated risks of infection and other morbidities, or too low (hypoglycemia) which can be lethal [1].

Currently in the operation room and intensive care unit (ICU) setting, blood glucose concentration is measured through manual, periodic blood sampling [2]. A commercial glucometer such as Accu-Chek® is commonly used to conduct the measurement. Each measurement is then tabulated manually before being entered into a computer database. For proper glycemic control, frequent blood glucose measurements are necessary, typically at the half hour interval. This constant need for manual...

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