________ is caused by an extra electrical impulse originating inside the atria, but outside the SA node; it produces an abnormal P wave earlier than expected.

__________ is the percentage of “size reduction” of the left ventricle. 

Which of the following is not considered an infiltrative cardiomyopathy?

Which type of HCM is considered “classic”?

On EKG, this abnormality causes a “saw-tooth” pattern:

What could most likely be assumed from this clip?

Which of the following arrhythmias is considered “life-threatening”?

_________________ is often seen with Marfan Syndrome. 

________________ affects the whole heart and impedes diastolic filling.  

A normal R-R interval is __________ beats per minute.