<i><b>They have done wonders through the years as far as heart research is concerned. I have always had a Medtronics pacer...this last one is a twin lead and all the other were a single lead. I&#39;ve needed one for the simple fact that my heart likes to stop on ocassion..it&#39;s call a sick sinus rythm...or an intruption of the heart&#39;s natural  pacemaker...simply a short circuit.<br /><br />I still have 18 months left to 65 and medicare....so I hope it&#39;ll last till then...our insurance has a lot to be desired as far as major work goes.<br /><br />Later<br />Jim</b></i>