[Epidemiology of the relationship between atrial fibrillation and heart failure]

Yassine Ragbaoui1, Chafia Chehbouni1, Ayoub El Hammiri1

  • 1Service de Cardiologie, Centre Hospitalier Universitaire IBN ROCHD, Casablanca, Maroc.

Insights

Atrial fibrillation (AF) is common in chronic heart failure patients in Morocco, affecting 10.6% of those studied. This study details the clinical profile and risk factors associated with this prevalent comorbidity.

Area of Science:

  • Cardiology
  • Public Health

Background:

  • Atrial fibrillation (AF) and heart failure frequently coexist, worsening patient prognosis.
  • This comorbidity presents a significant public health challenge globally and requires further epidemiological investigation.

Purpose of the Study:

  • To determine the prevalence of atrial fibrillation (AF) in patients diagnosed with chronic heart failure.
  • To characterize the clinical profile of patients experiencing both chronic heart failure and AF.

Main Methods:

  • A retrospective descriptive study was conducted using data from a heart failure registry.
  • The study included 3048 patients over 18 years old with chronic heart failure and AF, from June 2006 to March 2015.

Main Results:

  • The prevalence of heart failure among patients with AF was 10.6%.
  • Common cardiovascular risk factors included hypertension (54%), diabetes (39%), and sedentary lifestyle (30%).
  • The primary causes of chronic heart failure associated with AF were heart valve diseases (44.1%) and coronary artery diseases (32%).

Conclusions:

  • Atrial fibrillation is a frequent condition among heart failure patients in Morocco.
  • The average age of onset for AF in this population appears lower than reported in international literature.

Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
4.2K
Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
1.1K
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
1.1K
Heart Failure IV: Classification and Diagnostic Evaluation01:30

Heart Failure IV: Classification and Diagnostic Evaluation

Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
486
Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
656
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
721