fractional flow reserveintravascular ultrasoundre-occlusionsigns of reperfusionSpasmspontaneous reperfusionST Segment MonitoringT-Wave inversiontransient ST elevationWellens' syndrome2 Min Read Steve SmithonOctober 30, 2011 Wellens’ syndrome, no culprit, what happened? A 55 yo male with h/o smoking complained of 4 days of intermittent chest pain lasting up to a few hours each day. He presented to the ED…