“…T wave inversion is very common (17–100%) [7,13,15,21,33–36,64,66,96–98], and may be associated with a poorer prognosis [62,98]; however, peaked T waves sometimes predominate (86%) [64,98]. A long QTc interval is seen in 50–100% [3,7,12,21–26,64]. Pathological Q waves are observed in 20–63% [6,7,15,21–26,33–44,64] and new bundle branch blocks develop in approximately 6–8% [5,21–25].…”