This is very common to prevent clots from traveling to your heart or lungs.
I would suggest talking to your physician and requesting that he explain the procedure to you including how it works even if he has to draw a picture. I love it when my Doc draws a picture even if it is not a Picasso .
Let us know your decision and I will be thinking of you.
~~Kitt~~Moderator: Anxiety/Panic, Osteoarthritis, GERD/Heartburn and Heart/Cardiovascular Disease. www.healingwell.com"If you can't change the world, change your world"