The Association of Blood Glucose Levels and Arterial Stiffness (Cardio-Ankle Vascular Index) in Patients With Type 2 Diabetes Mellitus

Introduction: Diabetes mellitus causes a major burden on healthcare systems all around the world. It has been documented that type 2 diabetes mellitus (T2DM) is associated with long-term vascular complications including micro-vascular, macro-vascular, and mixed-vascular disorders. Several studies have concluded that the increment of arterial wall stiffness is correlated with an increase in the risk of cardiovascular adverse events and the mortality associated with it. Aims: This study purposed to evaluate the arterial stiffness measurements, using Cardio-Ankle Vascular Index (CAVI), in T2DM patients, and the relationship with the fasting blood glucose (FBG), hemoglobin A1c (HbA1c), and other factors that may increase the risk of elevated arterial stiffness in T2DM patients. Methodology: A total of 200 patients were recruited from the outpatient setting at King Fahd Hospital of the University, Al Khobar. A total of 181 patients fit the inclusion criteria. The charts of the patients who fit the inclusion criteria were reviewed and data related to age, gender, body mass index, smoking history, FBG, HbA1c levels, blood pressure (mmHg) measurements, and CAVI scores were collected. Results: The elevation in CAVI readings was noted to be more prominent in the senior age group. Hypertensive patients also showed a significant increase in CAVI readings. In addition, higher CAVI readings were more associated with the male gender rather than females. All of which showed a significant correlation. Furthermore, although it was not significant, higher FBG levels and HbA1c readings were correlated with higher CAVI readings. Conclusion: The results of the study suggest that factors like age, smoking status, gender, and the increase in blood pressure as well as the increase in blood glucose levels are correlated with higher CAVI readings in T2DM patients. This demonstrates their important effect on arterial wall stiffness while showing that CAVI can be used in predicting the prognosis of arterial wall health in patients with diabetes.