EKG machine has a blockage

Our doctor did an EKG on my son he stated that he had blockage in the lower right part of his heart. When we seen the heart doctor told us the blockage was on the EKG machine. I'm not sure I understand what he means.

[CCF HeartMD6]

I'm not exactly clear what was meant when your doctor informed you that there was a "blockage on the EKG machine." EKG's tell you about the electrical activity which translates into information about the anatomy, coronary blood flow, and pacemaking abilities. If having an acute heart attack (i.e. a ST-elevation MI), the location of the ST elevations can give you an idea which coronary vessel might be affected (right coronary artery, left circumflex, left anterior descending). However, I have never heard of an EKG machine being "blocked."

[is_something_wrong]

Could it be an interpretation of RBBB? Sorry to comment posts here, by the way. I'm not a physician.