Ask The Doctors: 05/07

Superior vena cava syndrome is an unusual complication of pacemakers and defibrillators. Basically, these devices are implanted through large veins in the chest that lead to the heart. For reasons that are unknown, in a very small percentage of patients, the pacemaker leads cause the formation of scar tissue on the inside of the veins, which can become narrowed to the point of obstructing blood flow. Surprisingly, other veins can enlarge and compensate by re-routing blood through them and back to the heart.
To continue reading this article or issue you must be a paid subscriber

Subscribe to Heart Advisor

Get the next year of Heart Advisor for just $20. And access all of our online content - over 2,000 articles - free of charge.
 
Subscribe today and save 38%. It's like getting 5 months FREE!
Already Subscribed?
Click Here to Sign In | Forgot your password? | Activate Web Access

Cardiac Health While You Sleep

An A-to-Zzzz guide to restful nights and more-zestful days.
To continue reading this article or issue you must be a paid subscriber

Subscribe to Heart Advisor

Get the next year of Heart Advisor for just $20. And access all of our online content - over 2,000 articles - free of charge.
 
Subscribe today and save 38%. It's like getting 5 months FREE!
Already Subscribed?
Click Here to Sign In | Forgot your password? | Activate Web Access