Had to take Carl (age 36 dx stage IV 10/06) to the ER yesterday because he was in Afib. He has had this 2 times prior and had to be shocked back to normal. This time was no different. The last time this happened was about 5 years ago. He has been taking medication to prevent it from happening and yet it still did. We were wondering if the chemo could have somehow brought it on. He is due for his next treatment tomorrow. Anyone out there dealing with heart issues in addition to their dx?