Hi guys, The NP tells me I have SVT (Superventricular Tachycardia). I was confused so she explained it to me. She said that the Sinus Node wasn't working properly and that that's why I was getting the Tachy. She mentioned that the sinus node was the bodies natural pacemaker. A friend asked me if the NP mentioned Sick Sinus Syndrome (SSS). She did not, but I looked it up and it did in fact sound as she described to me? Anyone familiar with SSS? Why would they call it SVT if it was SSS? Thanks for any info on this!! Amber