the cardiologist shows the film of an electrocardiogram of a patient with cardiac arrhythmia and bundle branch block. heart and

arrhythmia arrhythmias attack block branch bundle cardiac cardiogram cardiography cardiologist cardiology cardiovascular care clinic cycle diagnosis diagnostic disease doctor ecg ekg electrocardiogram emergency examination failure film health heart heartbeat hospital hypertension illness infarct infarction medic medical medicinal medicine myocardial pain patient physician pressure pulse rhythm shows sick stethoscope tachycardia therapy