An electrocardiogram is a picture of the electrical conduction of the heart. By examining changes from normal on the ECG, clinicians can identify a multitude of cardiac disease processes. There are ...

The Q wave is the first downward deflection after the P wave and the first element in the QRS complex. When the first deflection of the QRS complex is upright, then no Q wave is present. The normal ...

Not all doctors can conduct electrocardiogram (ECG) test for heart patients. Only cardiologists can carry out the test. After the completion of course, candidates will be given a certificate by ISE.