I have a single ventricle. Some people talk about having holes in their ventriclar or atrial walls. I do not have a hole, but rather I have no ventricular septum at all. Basically what they have done is re-routed my return circulation around the heart and directly to my lungs. There is some minor atrial assist, but no ventricular assist. My heart is really just a pump designed to deal with the return flow from my lungs and out to systemic circulation. As a result of having no ventricular septum, some of the nerve pulses that control rate also do not get through properly and thus I need a pacemaker for both atrial and ventricular pulsing, but mostly for ventricular pulsing. Without my pacemaker I will not die but my resting rate could be like 45-55 and my sleeping rate so low that it is undetectible using modern heart monitors, (makes for some annoying nights in the hospital when they wake me up with a code red insisting that I am dead when all I am trying to do is sleep). As far as all this shit goes, I probably do not have enough respect for my condition, but it would be nonetheless reasuring to know that this is a normal side effect from DNP, which your replies seem to indicate.
Thanx,
Mark