I live within 1/2 mile of a walk-in urgent care facility and also, a large Trauma 1 hospital. I am under the care of an EP who is a senior member of the hospital’s cardiovascular group. Your statement that “the risk of stroke increases with the span of the event” is medically incorrect, in the SVT context generally and given the particulars of my case. The prolonged episodes only make me tired, requiring a nap. However, frequent episodes, of long duration probably weaken the heart’s walls, which warrants further investigation. Thanks again for your input!