Heart Health

What does an enlarged atrium mean?

Print This Page

Ask the doctor

I recently had an echocardiogram because my doctor heard a murmur, and I was told that my heart valves and heart function were both normal. But when I looked at the report, it indicated that I had an enlarged left atrium. What does that mean?

The left atrium's size is directly related to your body size, and it may change with age. Two things can cause the left atrium to enlarge: elevated pressure or higher-than-normal blood volume in the left atrium. Either or both of these things can result from several different conditions, the most common being hypertension (high blood pressure). Both treated and untreated high blood pressure have been linked to left atrial enlargement.

To continue reading this article, you must log in.

Subscribe to Harvard Health Online Plus (HHO+) to unlock expert-backed health insights, personalized tools, and exclusive resources to feel your best every day.

Here’s what you get with your HHO+ membership:

  • Unlimited access to all Harvard Health Online content
  • 4 expertly curated newsletters delivered monthly
  • Customized website experience aligned to your health goals
  • In-depth health guides on topics like sleep, exercise, and more
  • Interactive features like videos and quizzes
  • Members-only access to exclusive articles and resources
Learn more about the benefits of features of HHO+ »

I’d like to subscribe to HHO+ for $4.99/month to access expert-backed content to help make smart, informed decisions about my well-being.

Sign Me Up

Already a member? Login ».

Print This Page

Disclaimer:

As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.

No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.

Free Healthbeat Signup

Get the latest in health news delivered to your inbox!

Sign Up
Harvard Health Publishing Logo

Thanks for visiting. Don't miss your FREE gift.

10 Ways to Fight Chronic Inflammation is yours absolutely FREE when you sign up to receive health information from Harvard Medical School.

Sign up to get tips for living a healthy lifestyle with ways to keep inflammation under control … lessen digestion problems … learn simple exercises to improve your balance…understand your options for cataract treatment … all delivered to your email box FREE.

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.

Harvard Health Publishing Logo

Stay on top of latest health news from Harvard Medical School.

Plus, get a FREE copy of the Best Diets for Cognitive Fitness.