The document discusses three cardiac procedures: Holter monitor, stress testing, and echocardiography. The Holter monitor measures heart activity over 24 hours or more to detect illnesses like epilepsy. Stress testing determines how well blood flows to the heart during activity or stress, commonly to detect coronary heart disease. Echocardiography uses ultrasound to detect cardiovascular disease by assessing the heart's size, shape, tissue damage, valves, flow patterns, and wall motion.