While an electrocardiogram (ECG) is a valuable tool for evaluating heart health, it may not be sufficient to detect all heart problems. An ECG records the heart's electrical activity and can identify abnormal rhythms, conduction issues, and certain signs of reduced blood flow to the heart muscle. However, it has limitations in detecting structural abnormalities or blockages in the coronary arteries. Additional tests, such as echocardiography, stress tests, or cardiac imaging (e.g., angiography), may be necessary to assess heart structure, function, and blood flow more comprehensively. A combination of clinical evaluation, medical history, symptoms, and appropriate diagnostic tests helps healthcare professionals make accurate diagnoses of heart problems.