This page lists all known medications that could potentially lead to 'QRS axis abnormal' as a side effect. It's important to note that mild side effects are quite common with medications. The ...

The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or ...

In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).

There is clearly a broad QRS complex which is predominantly positive in V1 indicative of RBBB. You can also see an RSR pattern to the QRS complex in V1 reflective of the fact that the left ventricle ...

The ECG findings of dextrocardia include a predominantly negative P wave (when sinus rhythm is present), negative QRS complex, and negative T wave in lead I. This results in a rightward QRS axis.