system
Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: BACKGROUND, OBJECTIVE, METHODS, RESULTS. Meshes: Aged, Chi-Square Distribution, Defibrillators, Implantable, Diabetes Mellitus, Type 2, Electrocardiography, Glycated Hemoglobin A, Glycemic Index, Humans, Hyperglycemia, Logistic Models, Male, Retrospective Studies, Statistics, Nonparametric, Tachycardia, Ventricular.
user
Is suboptimal glycemic control , independently of QT interval duration , associated with increased risk of ventricular arrhythmias in a high-risk population? Context: Although cardiovascular disease is the leading cause of mortality in diabetic patients, little is known about the impact of glycemic control on ventricular tachycardia (VT). To investigate whether hemoglobin A1c (HbA1c) is associated with increased incidence of VT. A retrospective study of 336 implantable cardioverter-defibrillator patients (both diabetes mellitus (DM) and non-DM) was conducted. HbA1c levels between 8% and 10% had a significant association with spontaneous VT, but not with QT/QTc.
assistant
Glycemic index is a significant predictor of spontaneous VT, independently of QT interval. Optimal glycemic control may help reduce occurrence of VT and sudden cardiac death in high-risk DM patients. Final Decision: yes