An electrocardiogram, commonly known as an ECG, is one of the most widely used tests for evaluating the heart. It records the electrical activity of the heart and can provide useful information about heart rhythm, heart rate and certain electrical abnormalities. However, an ECG represents the heart’s electrical activity during a particular period of time. It does not provide a complete picture of every aspect of heart health. This means that a reassuring ECG result does not always mean that no further cardiac evaluation is required. The need for additional testing depends on symptoms, medical history, cardiovascular risk factors and what the doctor is trying to investigate. Dr. Tanmay S. Kulkarni, Cardiologist in Baner, Pune, evaluates patients based on their individual symptoms and overall clinical picture before recommending further cardiac investigations.