Summary

Continuous blood glucose monitoring (CGM) is a tool that is used to measure interstitial glucose levels on a continuous basis, as often as every few minutes. CGM allows patients to monitor blood glucose levels as they fluctuate in response to insulin administration, food intake, exercise, and other factors. Ongoing feedback on glucose levels can be helpful for correcting the early signs of hyperglycemia. This article discusses issues that are related to CGM use in pregnant women, for nighttime glucose collection, and in patients with sleep apnea.