At this time of posting, I currently have no clinical data for this patient.  This ECG is of interest because of its arrhythmic and nonarrhythmic elements. 

I can think of at least two possible explanations for the mechanism of this rhythm and both would benefit from being illustrated by a laddergram. 

One mechanism is rather exotic and has not been previously seen here on this website or discussed in the various FB forums.   

This ventriculogram shows the typical apical ballooning of the left ventricle during Takotsubo myocardiopathy.  This serious condition can be caused by extreme stress, such as in the death of a loved one, or prolonged high stress levels.  The ECG will usually show ST elevations indicating an anterior wall M.I., but the angiogram will show no arterial occlusions.  Takotsubo myopathy causes a sudden onset of congestive heart failure.  It is transient, and those who survive it generally recover fully.  For an excellent and complete discussion of Broken-Heart Syndrome,

The ECG Guru now has a You Tube site where you can find videos to enhance your classes.  As with all ECG Guru content, there is no charge and no copyright.  Ventriculograms are often obtained during a cardiac cath procedure. A curved, or pigtail, catheter is inserted through the arterial access line into the aorta and then the left ventricle.  Contrast is introduced into the left ventricle and the pumping function of the ventricle can be observed.  The structure and function of the aorta and mitral valve may also be observed during this procedure.

Patient's clinical data:  Unknown aged white man.

What well-known eponym can technically be applied to this 12-lead ECG?  HINT:  It takes on a somewhat unusual form here.