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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...
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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.
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Class III antiarrhythmic drugs are a group of medications that can prolong action potentials in the heart. They achieve this by blocking potassium channels or enhancing inward currents from sodium channels. However, these drugs have a unique property of "reverse use-dependence," which is most pronounced at slower heart rates and can lead to torsades de pointes—a specific type of arrhythmia. However, it is essential to note that excessive QT interval prolongation—a measure of...
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Class IV antiarrhythmic drugs, such as verapamil and diltiazem, block calcium channels. They primarily affect the heart, slowing the conduction in calcium-dependent tissues like the SA and AV nodes. These drugs manage reentrant supraventricular tachycardia (SVT) and reduce ventricular rate in atrial flutter/fibrillation.
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Adrenergic stimulation generally impacts cardiac rate and rhythm. Specifically, stimulation of the β-adrenoceptors triggers an increase in intracellular calcium ion influx and pacemaker currents, which may cause arrhythmias. Catecholamines like adrenaline also demonstrate β2-adrenoceptor-mediated hypokalemia, impacting cardiac action potential and disrupting the normal cardiac rhythm. Class II antiarrhythmic drugs are β-adrenoceptor antagonists or β-blockers, which...
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Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
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Updated: Aug 26, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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[Alcohol and atrial fibrillation].

H J Aubin1, N Bouajila2, D Thomas3

  • 1Département de Psychiatrie et d'Addictologie, Hôpital Paul Brousse (APHP), Centre de Recherche en Epidémiologie et Santé des Populations (CESP), INSERM 1018, Villejuif, France.

Revue Medicale De Liege
|October 13, 2022
PubMed
Summary
This summary is machine-generated.

Alcohol consumption, especially binge drinking, is linked to atrial fibrillation (AF) risk. Reducing alcohol intake significantly lowers AF recurrence in diagnosed patients.

Keywords:
Atrial fibrillationDoseMendelian randomizationRisk factorAlcohol useresponse

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Area of Science:

  • Cardiology
  • Epidemiology
  • Public Health

Background:

  • Atrial fibrillation (AF) is a prevalent heart rhythm disorder affecting 3% of the global population.
  • Acute alcohol consumption, or binge drinking, is a known trigger for AF episodes, often termed 'holiday heart syndrome'.
  • Observational studies indicate a significant association between high alcohol consumption and increased AF risk.

Purpose of the Study:

  • To review the association between alcohol consumption and atrial fibrillation (AF).
  • To evaluate the impact of different alcohol consumption levels on AF risk and complications.
  • To assess the effect of alcohol reduction on AF recurrence in diagnosed patients.

Main Methods:

  • Meta-analyses of observational studies examining alcohol consumption and AF risk.
  • Review of studies on the association between low, moderate, and heavy alcohol intake and AF.
  • Analysis of Mendelian randomization studies to explore causal relationships.
  • Evaluation of clinical recommendations for alcohol abstinence in AF patients.

Main Results:

  • High alcohol consumption is significantly associated with an increased risk of AF.
  • The association between low/moderate alcohol consumption and AF risk is debated, possibly existing only at one drink per day or more.
  • Heavy alcohol consumption increases AF complication risks, while light/moderate intake does not.
  • Mendelian randomization studies provide conflicting results regarding a causal link between alcohol and AF.
  • Alcohol abstinence in diagnosed AF patients led to a significant reduction in AF recurrence.

Conclusions:

  • While a definitive causal link between alcohol and AF remains unconfirmed, evidence suggests high consumption increases risk.
  • Reducing alcohol intake, particularly in diagnosed AF patients, effectively decreases AF episode recurrence.
  • Further research is needed to clarify the causal relationship, but limiting alcohol is advisable for AF management.