Related Experiment Video

Updated: Aug 13, 2026

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
08:28

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus

Published on: April 5, 2011

Diabetes and the occurrence of ventricular arrhythmic events in patients with severe left ventricular dysfunction

D Aronson1, A J Burger

  • 1Beth Israel Deaconess Medical Centre, Harvard Medical School, 1 Deaconess Road, Boston, MA 02215, USA.

Diabetologia
|October 16, 2002
PubMed

Insights

In severe heart failure, diabetes appears to reduce the risk of ventricular arrhythmias, including ventricular tachycardia. This protective effect of diabetes warrants further investigation into its underlying mechanisms.

Area of Science:

  • Cardiology
  • Diabetology
  • Clinical Electrophysiology

Background:

  • Diabetes mellitus is linked to increased cardiovascular disease risk, including ischemic heart disease and heart failure.
  • Heart failure patients are prone to rhythm disorders, but the specific impact of diabetes on ventricular arrhythmias in this population remains debated.
  • Existing research presents conflicting findings regarding the association between diabetes and arrhythmic events.

Purpose of the Study:

  • To investigate the frequency of ventricular arrhythmic events in patients with severe heart failure, comparing those with and without diabetes.
  • To determine if diabetes influences the burden of ventricular ectopy and episodes of ventricular tachycardia in heart failure.

Main Methods:

  • A study cohort of 207 patients with severe heart failure was analyzed.
  • Ventricular arrhythmias were quantified using 24-hour Holter monitoring, assessing measures like ventricular pairs and repetitive ventricular beats.
  • Multivariate analyses were employed to adjust for clinical variables and medications.

Main Results:

  • Patients with diabetes (48% of the cohort) exhibited significantly lower measures of ventricular ectopy compared to non-diabetic patients.
  • Specific findings include lower mean hourly ventricular pairs, repetitive ventricular beats, and episodes of ventricular tachycardia per 24 hours in diabetic patients.
  • Multivariate analysis confirmed an independent, negative association between diabetes and ventricular arrhythmias, with diabetes significantly reducing the risk of ventricular tachycardia (OR 0.41).

Conclusions:

  • Diabetes appears to confer a protective effect against ventricular arrhythmias in the context of decompensated heart failure.
  • The underlying biological mechanisms responsible for this observed protective effect require further elucidation.
  • These findings suggest a complex interaction between diabetes and cardiac electrophysiology in heart failure patients.
Abstract

More Related Videos

Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes11:00

Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes

Published on: September 18, 2017

Modeling and Evaluation of Murine Diabetic Cardiomyopathy Model06:22

Modeling and Evaluation of Murine Diabetic Cardiomyopathy Model

Published on: November 29, 2024

Related Concept Videos

Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
Complications of Diabetes Mellitus01:22

Complications of Diabetes Mellitus

Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...