The causes of the R wave in lead V1 greater in amplitude ... chronic ST elevation in the anterior precordial leads. Low voltage on the ECG can be caused by obesity, chronic obstructive pulmonary ...

An "Osborne wave" characterized by a notch in the downward portion of the R wave in the QRS complex. Low voltage. Bradycardia: This can be sinus bradycardia, junctional bradycardia, atrial ...