ecg electrocardiograph paper that shows unconfirmed diagnosis of abnormal cardiac electrical impulses and myocardial ischemia,

abnormal abnormality analysis arrest artery atherosclerosis atrial attack background beat cardiac cardiogram cardiology care chart concept coronary diagnosis disease ecg ekg electrical electrocardiogram electrocardiograph emergency focus graph graphic health healthy heart hospital impulses infarction ischemia ischemic lateral left medical medicine mycardial myocardial nsr pacs paper patient pulse pvcs rhythm selective shows sinus stroke stt test thrombosis treatment unconfirmed vascular