Heart Health

Heart disease and high altitudes: Safe to travel?

Q. I had a heart attack about five years ago, but I have no symptoms now. I am planning a vacation where I will be spending several days over 8,000 feet. Do I need to take any precautions?

A. You should be able to take this trip if you prepare and don't overtax yourself. Before any long-distance vacation, especially one that involves strenuous outdoor activity, you should see your doctor for a general checkup and review of your heart condition. Even if you have had no symptoms for years, there is still reason for caution in this case. At high altitudes, the air contains less oxygen. In response, you will begin to hyperventilate (breathe rapidly) to maintain sufficient oxygen levels in the blood. Also, your heart will beat 15 to 20 beats per minute faster, and your blood pressure will rise somewhat. A general estimate is that any activity at an 8,000-foot altitude will require an additional 15% to 20% in effort compared with sea level, straining your cardiovascular system. Walking on flat ground at 8,000 feet will feel like a slow jog.  

To continue reading this article, you must log in.

Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.

  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »

I'd like to receive access to Harvard Health Online for only $4.99 a month.

Sign Me Up

Already a member? Login ».

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.

The Best Diets for Cognitive Fitness, is yours absolutely FREE when you sign up to receive Health Alerts from Harvard Medical School

Sign up to get tips for living a healthy lifestyle, with ways to fight inflammation and improve cognitive health, plus the latest advances in preventative medicine, diet and exercise, pain relief, blood pressure and cholesterol management, and more.

Harvard Health Publishing Logo

Health Alerts from Harvard Medical School

Get helpful tips and guidance for everything from fighting inflammation to finding the best diets for weight loss...from exercises to build a stronger core to advice on treating cataracts. PLUS, the latest news on medical advances and breakthroughs from Harvard Medical School experts.

BONUS! Sign up now and
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.