A pacemaker is just what the name implies. I have an ICD that can also pace my heart beats. I too have a very slow heart rate. While in the hospital getting the ICD, my heart rate was in the 30's most of the time while I was laying there. I was dizzy just laying in the bed. The ICD technician, on the doctors orders, turned up the low end rate to 40 beats per minute. Now my heart rate can never go below that number.
I would guess that the feeling you get when your heart rate is fast is caused by your heart trying to make up for your body's demand for more oxygen. It has to beat faster to supply that need. So a pacemaker to even out your heart rate sounds logical.
I have a Guidant pacemaker. Yeah, Guidant had to recall alot of ICD's recently. Something like 76,000 of them. They did this voluntarily because 2 units out of 21,000 of a certain type failed to respond correctly. Out of 76,000 total recalls they have had problems with only a few. The chances of an ICD acting up is very rare. So don't get too bent out of shape over that.
I think your Electrophysiologist is doing right by you based on having gone through it myself.
Good luck to you and try not to worry.
I had a massive heart attack on May 4, 2003. Thru the course of diagnosis while in ER and catheterization it was determined that I had 3 arteries 100% blocked, 1 artery at 98% blocked and 1 artery at about 85% blocked. I have EJ fraction around 20 and have had numerous echo-cardiograms to monitor heart function. I lost 60% of my heart that night. I cannot do what I used to but feel great. In September of 04 I had an AICD implanted more or less to act as a saftey net for when my heart stops and have developed alot of arrythmia problems. I also have two aneurysms. One is on my ascending aorta and is distorting the aortic valve. The other is an abdominal aortic aneurysm. Both of which need to be repaired.