The ventricular beats typically have a right axis deviation.

The electricity then has to go through the other fascicle, and thus is a frontal right axis deviation seen on the ECG.

The most commonly seen signs in the ECG is sinus tachycardia, right axis deviation and right bundle branch block.

Between +90 degrees and +180 degrees the condition may be termed Indeterminate Deviation or more often Extreme Right Axis Deviation.

An ECG with right ventricular hypertrophy may or may not show a right axis deviation on the ECG.

When left bundle-branch block (LBBB) is accompanied by right axis deviation (RAD), the rare combination is considered to be highly suggestive of dilated or congestive cardiomyopathy.

In addition to the PR prolongation, individuals with a primum ASD have a left axis deviation of the QRS complex while those with a secundum ASD have a right axis deviation of the QRS complex.