At times it can be difficult to distinguish "SVT with aberrancy ... R wave in lead V1 or V2 measuring > 40 ms (one little box). This is not the case in the QRS complex on this ECG, except for ...

The purpose of this study was to evaluate whether the 12-lead ECG could be substituted by ECG sets with a limited number of leads. Materials and methods: The performance of three ECG systems (ie ...