The QRS complex is positive in lead I and negative in lead II and also negative in lead aVF – indicating left axis deviation TIP When you see RBBB always look for 1 st degree heart block and/or left ...

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).

Unfortunately I can't email it - it means that the heart is turned a little bit to the right - usually if slightly enlarged but it is not necessarily a sign of problems. Discover the Truth Step into a ...

From the Cardiology and Surgery Branches, National Heart Institute. Select the format you want to export the citation of this publication.

An atrial septal defect of the secundum type is relatively common and occurs from failure of the septum secundum to develop. This results in a communication between the left and right atrium directly ...