Editing Difficult QT (section)

===Examples===
[[Image:lastigeQT1.png|thumb| The T wave is broad, but the tangent crosses the baseline before the T wave joins the baseline. The QT interval would be overestimated when this last definition of the end of the T wave would be used.]]
[[Image:lastigeQT2.png|thumb| The ECG does not meet the baseline after the end of the T wave. Still, the crossing of the tangent and baseline should be used for measurements.]]
[[Image:lastigeQT3.png|thumb| A bifasic T wave. The tangent to the 'hump' with the largest amplitude is chosen. This can change from beat to beat, making it more important to average several measurements.]]