Description
The heart’s primary function is to pump blood to the lungs, where it is enriched with oxygen, and then to circulate the oxygenated blood to the rest of the body’s organs. As the heart continuously contracts and expands, low-voltage electrical currents are generated in the sinoatrial node. The electrocardiogram records the generation and changes in the electrical potential that occur sequentially in the heart’s cells.
How the test is performed
The test is performed by placing special wires whose metal tips (electrodes) are secured to the skin using a simple suction cup mechanism. Electrodes are placed on the upper and lower extremities as well as on the chest wall. Each electrode reads the heart from its own angle, allowing the doctor to gather more information. This test takes no more than five minutes and is painless and completely safe
What conditions can be diagnosed with an ECG
The ECG plays a crucial role in diagnosing most heart conditions, such as coronary artery disease (myocardial ischemia), various arrhythmias, and others.