###Human: Why do I have an abnormal ECG? ###Assistant: Hello. Chest pain occurs due to various causes. For example heart problem, lung problem, muscle problem, bone problem, stomach problem etc. Your TMT (treadmill test) is normal. It indicates that your heart condition is likely to be healthy. For your chest pain, the reason may be other than a heart problem. Have you done your echocardiography? If not, you can do it to rule out a structural heart problem. For more information consult a cardiologist online -->