###Human: What does borderline ST segment response mean in TMT? ###Assistant: Hi. I have gone through your reports (attachment removed to protect patient identity) very carefully. Do not worry as ST-T changes less than 1 mm are not significant in inferior leads, and in the anterior leads also the changes are less than 1 mm. You achieved the target heart rate, and exercise tolerance was also fair. The changes reverted to normal in less than a minute. I do not think you need to worry as echocardiogram was normal. The sensitivity of TMT (treadmill test) to rule out coronary artery disease is around 70 %. In 30 % of cases, it is a false positive. Are you a smoker or alcoholic? Revert with more information to a cardiologist online -->