How often do you see an ECG that is just a little off? Maybe the T wave is flat, oddly-shaped or inverted. Maybe the ST segment is coved, very minimally-depressed or shows some J point elevation.

Lower heart rates also result in a longer QT interval. A quick way to distinguish a prolonged QT interval is to examine if the T wave ends beyond the halfway point between the RR interval.

One of the longest-lasting and strongest June heat waves in years is revving up across ... “This level of rare and/or long-duration extreme heat with little to no overnight relief affects ...

While such temperatures aren’t unprecedented ... HeatRisk at some point during the heat wave. That is the highest level, described as “rare and/or long-duration extreme heat with little ...