[Alcohol and rhythm disorders]

Y Hémery1, H Broustet, O Guiraudet

  • 1Service de pathologie cardiovasculaire, HIA du Val-de-Grâce, 74, boulevard de Port-Royal, 75230 Paris, France. hemery@clubinternet.fr

Annales De Cardiologie Et D'Angeiologie
|January 31, 2003
PubMed

Insights

Excessive alcohol consumption increases the risk of sudden cardiac death and arrhythmias, even in individuals without alcoholic cardiomyopathy. Alcohol withdrawal also poses a critical risk for ventricular arrhythmias.

Area of Science:

  • Cardiology
  • Toxicology

Context:

  • Cardiovascular disease is a leading cause of mortality in chronic alcoholics.
  • Excessive alcohol intake is strongly linked to sudden cardiac death.
  • Ethanol's pro-arrhythmogenic effects contribute to cardiac arrhythmias.

Purpose:

  • To highlight the association between alcohol consumption and cardiac arrhythmias.
  • To emphasize the importance of considering alcohol's role in arrhythmias.
  • To outline management strategies including detoxification and alcohol cessation.

Summary:

  • Alcohol consumption, even in moderate amounts or in individuals without diagnosed alcoholic cardiomyopathy, is associated with an increased risk of cardiac arrhythmias.
  • Ethanol can directly induce pro-arrhythmogenic effects, leading to potentially fatal events like sudden cardiac death.
  • Management requires detoxification and sustained abstinence, with particular attention to the heightened risk of ventricular arrhythmias during alcohol withdrawal.

Impact:

  • Clinicians should consider alcohol's role in all arrhythmia cases, regardless of cardiac health history.
  • Raising awareness about alcohol-induced cardiac risks can improve patient outcomes.
  • Further research into the mechanisms of alcohol's arrhythmogenic effects is warranted.

Related Concept Videos

Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
CNS Depressants: Alcohol and Nicotine01:27

CNS Depressants: Alcohol and Nicotine

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
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...
Depressants01:28

Depressants

Depressant drugs, including alcohol and sedative-hypnotics, diminish central nervous system activity by enhancing the action of gamma-aminobutyric acid (GABA), a neurotransmitter that reduces brain activity and promotes relaxation. These substances can have various therapeutic uses but also pose significant risks, especially when misused or combined.
Alcohol is a common depressant that can induce a sense of relaxation and reduced inhibition at low doses. Contrary to its occasional...
Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...