Remember that T wave inversions and ST segment depression are normal in leads V1 to V3 in the presence of a right bundle branch block; thus, myocardial ischemia technically cannot be easily determined ...

Narrow-complex tachyarrhythmias are rapid heart rhythms originating in the upper heart chambers, characterized by a QRS duration of less than 120 milliseconds on an EKG. These arrhythmias can be ...

Hyperkalemia can cause life-threatening arrhythmia, and thus recognizing related patterns on the ECG is crucial. The ECG findings of hyperkalemia change as the potassium level increases, from slightly ...

At Apple’s September keynote the company introduced the Series 4 Apple Watch. Among the features announced was a preview of the ability to generate an electrocardiogram or ECG within thirty seconds by ...