<prompt> A 70-year-old man with a past medical history of ischemic hea disease and hypeension presents to his GP with recurrent episodes of syncope over the past 2 weeks.Based upon this ECG, which of the following clinical findings is most likely to be present?Absent JVPCanon A wavesAbsent hepato-jugular refluxGiant V waves  <response>: Complete Hea block. HR30minute As Bundle of his fire on rate of 40min. P-P R-R intervals are unequal. So atrial rate ventricular rate are not equal. -Canon A wave in JVP seen on complete hea block 