Related Experiment Video

Updated: Nov 9, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
28:13

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

33.6K

Hypertension and Atrial Fibrillation: A Study on Epidemiology and Mendelian Randomization Causality

Li-Zhen Liao1,2,3, Xiu-Yun Wen1,2,3, Shao-Zhao Zhang4

  • 1Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China.

Frontiers in Cardiovascular Medicine
|April 9, 2021
PubMed

Insights

Hypertension (HT) significantly increases the risk of atrial fibrillation (AF). This study found HT raises AF incidence by 50% and confirmed a causal link using genetic analysis, supporting targeted HT management for AF prevention.

Area of Science:

  • Cardiology
  • Genetics
  • Epidemiology

Background:

  • Hypertension (HT) and atrial fibrillation (AF) frequently co-occur, but their causal relationship requires further investigation.
  • Understanding this link is crucial for developing effective prevention and treatment strategies for cardiovascular diseases.

Purpose of the Study:

  • To investigate the causal relationship between hypertension and the incidence of atrial fibrillation.
  • To quantify the increased risk of AF in individuals with HT.

Main Methods:

  • Utilized individual participant data from the Atherosclerosis Risk in Communities (ARIC) study (n=9,474).
  • Employed Kaplan-Meier estimates and Cox hazard regression to assess the association between HT and incident AF.
  • Conducted two-sample Mendelian randomization (MR) using genome-wide association studies (GWAS) data to analyze causality between genetically determined HT and AF.

Main Results:

  • A total of 1,414 incident AF cases were identified over a median follow-up of 24.1 years.
  • Adjusted Cox regression showed a 50% increased hazard of incident AF in participants with HT (HR: 1.50, 95% CI 1.29-1.73).
  • MR analysis revealed a significant causal correlation between genetically determined HT and AF (OR: 1.90, 95% CI 1.18-3.04), with genetically determined systolic and diastolic blood pressure consistently associated with higher AF risk.

Conclusions:

  • Hypertension is associated with a 50% increased risk of incident atrial fibrillation in the ARIC cohort.
  • Mendelian randomization analysis provides strong evidence supporting a causal inference between hypertension and atrial fibrillation.

Keywords:
atrial fibrillationcausalitygenome-wide association studyhypertensionmendelian randomization

More Related Videos

Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice08:05

Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice

Published on: June 29, 2022

3.1K
Transesophageal Atrial Burst Pacing for Atrial Fibrillation Induction in Rats05:12

Transesophageal Atrial Burst Pacing for Atrial Fibrillation Induction in Rats

Published on: February 14, 2022

3.5K

Related Concept Videos

Causality in Epidemiology01:21

Causality in Epidemiology

Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
1.2K
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
3.4K
Confounding in Epidemiological Studies01:27

Confounding in Epidemiological Studies

Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...
350
Introduction to Epidemiology01:26

Introduction to Epidemiology

Epidemiology, known as the cornerstone of public health, involves studying the distribution and determinants of health-related events in defined populations and applying these insights to control health issues. This is essential for understanding how diseases spread, identifying populations at greater risk, and implementing measures to control or prevent outbreaks. Epidemiology addresses not only infectious diseases but also non-communicable conditions like cancer and cardiovascular disease,...
1.3K
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
298
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
600