The R wave is large in lead V1. Turn the ECG upside down and you will see ST segment elevation in V1 and a large Q wave which are normal findings of a myocardial infarction. For a detalied review ...

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 ...

The ability to identify an abnormality on the 12-lead ECG, suggestive of underlying cardiac disease associated with sudden cardiac death (SCD), is based on a sound working knowledge of the normal ECG ...

The goal of ECG interpretation in athletes is to classify the ECG as: (1) ‘normal’—no further evaluation needed or (2) ‘abnormal’—further evaluation needed. Normal ECGs include common, ...