Electrocardiography (ECG or EKG) is one of the most commonly performed heart tests used to record the electrical activity of the heart. It is a simple, quick, painless, and non-invasive test that provides important information about heart rhythm, heart rate, blood supply to the heart muscle, and overall cardiac function. ECG interpretation helps detect various heart conditions early and guides further treatment when necessary.
An ECG is commonly advised for patients with chest pain, palpitations, dizziness, breathlessness, fainting episodes, high blood pressure, suspected heart attack, or irregular heartbeat. It may also be performed as part of routine health check-ups, pre-operative evaluation, sports fitness assessment, or monitoring of patients with known heart disease.
During the test, small adhesive electrodes are placed on the chest, arms, and legs to record electrical signals generated by the heart. The procedure takes only a few minutes and does not cause any pain or discomfort. The recorded ECG tracing is then carefully analyzed to evaluate heart rhythm, conduction pathways, heart rate abnormalities, evidence of previous or ongoing heart attack, enlargement of heart chambers, electrolyte disturbances, and other cardiac conditions.
ECG interpretation can help diagnose conditions such as heart attack (myocardial infarction), arrhythmias, atrial fibrillation, heart block, abnormal fast or slow heart rhythms, ischemia (reduced blood supply to the heart), and certain inherited electrical disorders of the heart. In emergency situations, rapid ECG interpretation plays a crucial role in early diagnosis and timely life-saving treatment.
Although ECG is a very valuable screening and diagnostic tool, some heart problems may require additional tests such as echocardiography, Holter monitoring, stress testing, CT angiography, or coronary angiography for more detailed evaluation. ECG findings are always interpreted in combination with symptoms, clinical examination, and other investigations.
Accurate ECG interpretation is extremely important in modern cardiac care because it helps in early detection of heart disease, guides treatment decisions, and allows timely intervention. Early diagnosis and appropriate cardiac evaluation can significantly improve patient outcomes and long-term heart health.
ESC
