Skip to content

Heart Disease Health Center

Font Size

Supraventricular Tachycardia - Cause

Two common types of supraventricular tachycardia—atrioventricular reciprocating tachycardia (AVRT) and atrioventricular nodal reentrant tachycardia (AVNRT)—are caused by an abnormal electrical pathway in the heart and often occur in people who do not have any other type of heart disease. What causes this abnormal pathway might not be clear.

Some experts believe that AVRT—specifically Wolff-Parkinson-White syndrome—may in some cases be inherited.

Recommended Related to Heart Disease

My WebMD: In My 20s With a Pacemaker

"Does your bra really go up that high?" the TSA officer asked, running her hands along my chest. My boyfriend, Adam, and I were headed for a romantic getaway, and being held at airport security wasn't on our itinerary. "I have a pacemaker.  That's a scar, not my bra," I said. "You're too young for that," she said. While I'm not the only 26-year-old with a pacemaker, I'm the only one most security officers have seen. Of the pacemakers installed yearly, 84% are for people older than age 65. Only 6%...

Read the My WebMD: In My 20s With a Pacemaker article > >

For more information about how SVT happens, see the topic Types of Supraventricular Tachycardia.

Other types of supraventricular tachycardia may be caused by:

  • Overly high levels of the heart medicine digoxin (such as Lanoxin) or the bronchodilator theophylline .
  • Other serious health problems, such as chronic obstructive pulmonary disease, heart failure, pneumonia, or metabolic problems.
  • Heart surgery in the upper chambers of the heart, such as surgery for a congenital heart defect.

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:

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