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How can heart failure lead to AFib?

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It works in the other direction, too. Your heart's rhythm is controlled by electrical signals. For those signals to work well, they need healthy heart tissue.

But heart failure can actually stretch your atria and cause tissue in your heart to thicken and scar. Those changes throw off the electrical signals, and that messes up the heart's rhythm and can cause AFib.

From: Can AFib Lead to Heart Failure? WebMD Medical Reference

SOURCES:

Mayo Clinic: "Atrial Fibrillation," "Heart Failure," "High blood pressure (hypertension)."

American Heart Association: "What is Atrial Fibrillation (AFib or AF)?" "What Is Heart Failure?" "Atrial Fibrillation and Heart Failure," "Why Atrial Fibrillation (AF or AFib) Matters," "Smoking & Cardiovascular Disease (Heart Disease)."

U.S. National Library of Medicine: "Atrial fibrillation in heart failure: what should we do?" "Atrial Fibrillation in Congestive Heart Failure," "Smoking and Incidence of Atrial Fibrillation: Results from the Atherosclerosis Risk in Communities (ARIC) Study."

American Heart Association/American Stroke Association: "When the Beat is Off -- Atrial Fibrillation."

British Heart Foundation: "Your weight and heart disease."

Harvard Health Publications, Harvard Medical School: "Thyroid disorders and heart conditions: What's the connection?"

NIH, National Heart, Lung, and Blood Institute: "How Does Smoking Affect the Heart and Blood Vessels?"

Reviewed by James Beckerman on July 25, 2017

SOURCES:

Mayo Clinic: "Atrial Fibrillation," "Heart Failure," "High blood pressure (hypertension)."

American Heart Association: "What is Atrial Fibrillation (AFib or AF)?" "What Is Heart Failure?" "Atrial Fibrillation and Heart Failure," "Why Atrial Fibrillation (AF or AFib) Matters," "Smoking & Cardiovascular Disease (Heart Disease)."

U.S. National Library of Medicine: "Atrial fibrillation in heart failure: what should we do?" "Atrial Fibrillation in Congestive Heart Failure," "Smoking and Incidence of Atrial Fibrillation: Results from the Atherosclerosis Risk in Communities (ARIC) Study."

American Heart Association/American Stroke Association: "When the Beat is Off -- Atrial Fibrillation."

British Heart Foundation: "Your weight and heart disease."

Harvard Health Publications, Harvard Medical School: "Thyroid disorders and heart conditions: What's the connection?"

NIH, National Heart, Lung, and Blood Institute: "How Does Smoking Affect the Heart and Blood Vessels?"

Reviewed by James Beckerman on July 25, 2017

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Why do people have both heart failure and AFib?

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