Skip to content

Heart Disease Health Center

Font Size

Mitral Valve Disease: Heart Rhythm Problems - Topic Overview

A complication of mitral valve stenosis or mitral valve regurgitation (MR) is an irregular heartbeat (arrhythmia).

This irregular heartbeat is created by a disruption in a web of nerves covering the surface of the heart. These nerves send electrical signals that cause your heart to contract and pump blood out of the heart.

Recommended Related to Heart Disease

Heart Health and Your Family History

Most people know that cardiovascular disease can run in families -- that if you have a family history of heart disease, you may be at greater risk for heart attack, stroke, and other heart problems. But how much does family history affect your heart health? What parts of the family tree are most important? And what can you do about it?

Read the Heart Health and Your Family History article > >

This web of nerves is controlled by a collection of cells on the right atrium called the sinoatrial node. As it fires, so do the rest of the nerves, causing all of the muscle cells in your heart to contract, producing one forceful pump.

As mitral valve stenosis or MR stretches out your heart, it too can disrupt this web of nerves. Communication pathways may weaken because the sinoatrial node is no longer working correctly. Without clear signals from this node, the nerves begin to fire randomly, creating a chaotic network of electrical signals. When this happens, the heart is no longer able to pump with one motion, and instead it starts beating irregularly (arrhythmia).

Atrial fibrillation is the most common arrhythmia that stems from mitral valve stenosis and MR. If you have atrial fibrillation, you will have treatment to control or stop the irregular rhythm.

For more information, see the topic

Atrial Fibrillation.

    WebMD Medical Reference from Healthwise

    Last Updated: March 12, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
    1
    Next Article:

    Mitral Valve Disease: Heart Rhythm Problems Topics

    Today on WebMD

    x-ray of human heart
    A visual guide.
    atrial fibrillation
    Symptoms and causes.
     
    heart rate graph
    10 things to never do.
    Compressed heart
    Article
     
    empty football helmet
    Article
    red wine
    Video
     
    eating blueberries
    Article
    Simple Steps to Lower Cholesterol
    Slideshow
     
    Inside A Heart Attack
    SLIDESHOW
    Omega 3 Sources
    SLIDESHOW
     
    Salt Shockers
    SLIDESHOW
    lowering blood pressure
    SLIDESHOW