When you feel an arrhythmia, you telephone a monitoring station so a record of the episode can be made. The monitor also has a memory you can activate if a phone is unavailable. The device senses weak magnetic fields generated by heart muscle tissue and localizes the arrhythmia non-invasively to save time during the invasive study. You will be tilted upright to about 60 degrees on a special table for a period of time with continuous recording of your ECG and blood pressure. These catheters sense electrical impulses and may also be used to stimulate different areas of the heart.
Doctors can then locate the sites which are causing serious arrhythmias.
The heart is muscular and hollow, constantly pumping blood to deliver oxygen and nutrients to the body. It is comprised of four compartments, or chambers- two on the right side and two on the left. All four chambers work together to move life-sustaining blood through the body. The heart's rhythmic contractions depend on an electrical system which conducts electrical impulses throughout the heart. The impulse spreads through the atria, causing a contraction and squeezing blood into the ventricles.