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High Prevalence of Abnormal Glucose Metabolism and Poor Sensitivity of Fasting Plasma Glucose in the Chronic Phase of Stroke

Background: Cardiovascular disease is the leading cause of death in long-term stroke survivors, and whole-body glucose metabolism is strongly linked to cardiovascular disease risk. This study provides important preliminary information on the prevalence of abnormal glucose metabolism in chronic stroke patients (mean 3 years after stroke) and reports on the utility of screening for abnormalities using fasting plasma glucose (FPG) in this population. Methods: Two hundred and sixteen chronic hemiparetic stroke patients were screened for diabetes status by medical history and FPG. A subset (n = 80) was evaluated by oral glucose tolerance test to assess the utility of screening for abnormalities using FPG alone. Results: Seventy-five of the 216 (35%) had type 2 diabetes by medical history. Another 70 were either diabetic (n = 11) or had impaired fasting glucose (n = 59) based on a single blood draw at the time of screening. FPG among non-diabetic stroke patients had a sensitivity of 49% for predicting abnormalities in the 2-hour glucose level during oral glucose tolerance test. Cumulative results identify 77% as abnormal (impaired or diabetic) on the basis of medical history, fasting plasma glucose, and/or 2-hour glucose level. Conclusions: The prevalence of abnormal glucose metabolism is extremely high in chronic stroke and is underestimated on the basis of FPG.