Summary. Your body's immune system protects you from disease and infection. But if you have an autoimmune disease, your immune system attacks healthy cells in your body by mistake. Autoimmune diseases can affect many parts of the body. No one is sure what causes autoimmune diseases.
The types of EKG include: Standard (resting) EKG involves measuring your heartâs electrical activity as you relax in a reclining or semi-reclining position. This is the most common type of EKG. Stress test (exercise EKG or treadmill test) involves performing an EKG while you exercise, usually on a treadmill.olter monitor (24-hour EKG or ambulatory EKG) involves wearing an electronic EKG recorder for 24 hours. It records the electrical activity of your heart over 24 hours. It helps diagnose arrhythmias (irregular or abnormal heartbeats).
A standard exercise stress test uses an EKG (electrocardiogram) to detect and record the heart's electrical activity. An EKG shows how fast your heart is beating and the heart's rhythm (steady or irregular). It also records the strength and timing of electrical signals as they pass through your heart.