QRS complex and T wave in lead I. Predominantly upward P wave, QRS complex and T wave in aVR. This is opposite of what is seen in a normal ECG. The above findings are similar to that seen in a ...

and the QRS axis is normal. The causes of LAD are listed below. Note that the first three account for almost 90% of ECG tracings with LAD. If the QRS is predominantly negative in lead I and ...

In addition to changes in the ECG caused by disease, there are a variety of atypical ECG patterns, often called 'normal variants ... syndromes should lead to improved understanding of underlying ...