Electrocardiography (ECG or EKG) is a medical test used to measure the electrical activity of the heart. It is a non-invasive procedure that helps healthcare professionals assess the heart's rhythm, rate, and overall cardiac health. During an electrocardiogram, small electrodes are placed on specific locations of the patient's chest, arms, and legs. These electrodes detect the electrical signals generated by the heart as it beats. The signals are then recorded and displayed as a graph or waveform on an ECG machine. The ECG waveform provides valuable information about the heart's electrical activity. It can help diagnose various heart conditions such as arrhythmias (abnormal heart rhythms), myocardial infarction (heart attack), atrial fibrillation, and other abnormalities. A standard ECG typically shows several waves and intervals, including the P wave, QRS complex, and T wave. These components represent the depolarization and repolarization of different parts of the heart during each heartbeat. Interpreting an ECG requires medical expertise. Healthcare professionals, such as cardiologists or specially trained technicians, analyze the waveform to identify any irregularities or abnormalities. The ECG findings, along with other diagnostic tests and clinical assessments, help guide the diagnosis and treatment of heart conditions. ECGs are commonly performed in hospitals, clinics, and doctor's offices. They are quick, painless, and provide valuable information about the heart's function. If you have specific concerns about your heart health, it's important to consult with a healthcare professional who can assess your symptoms and order the appropriate tests, such as an ECG, if necessary.