Electrocardiogram (ECG or EKG) Make an Appointment Patient Education Find a Doctor Download Patient Education Your doctor has suggested you have a test called an electrocardiogram (ECG or EKG) to check for an abnormal heart rhythm. Learn how to get ready for the test, how long the test will take and more. Download PDF: Electrocardiogram (ECG or EKG) Download PDF: Electrocardiogram (ECG or EKG) View more information on Electrocardiogram National Jewish Health authors free downloadable patient education materials to provide you and your family the information and tools to help manage your disease. They include Understanding Booklets, Med Facts, Test Facts, Medication handouts and more. Search Free Education Materials