Case report: male 63 years old with documented stenosis of the internal cerebral artery, diabetes duration 12 years, and treatment with 22 IU insulin glargine at bedtime: parallel recording of continuous glucose monitoring system and Holter. Case report: male 63 years old with documented stenosis of the internal cerebral artery, diabetes duration 12 years, and treatment with 22 IU insulin glargine at bedtime: parallel recording of continuous glucose monitoring system and Holter. Markolf Hanefeld et al. Dia Care 2016;39:S205-S209 ©2016 by American Diabetes Association