Treadmill Stress Test - Results and Exercise Treadmill Stress Test

Treadmill Stress Test is a very important test and is carried out in almost all cases of CAD (Coronary artery disease). This test reveals the response of heart to the stress of exercise. The patient is connected to the ECG machine and is asked to walk on a treadmill.

The recordings of the ECG indicate the response of the heart during exercise. If the muscles of the heart is getting less supply of blood during exercise, the same will be evident in the ECG.

Since a normal resting ECG does not rule out CAD, the stress test may prove valuable in the detection of occult/asymptomatic cases of CAD. This test is specially indicated when the person is suffering from one or more risk factors responsible for CAD like high blood pressure, high blood sugar, cholestrol, uric acid, etc. and when there is a strong family history of CAD.

Besides detection of hidden cases, stress test is also indicated following a heart attack, in all cases. It tells about the extent of lesion, prognosis including efficacy of the treatment. In some cases, after a heart attack, only a modified treadmill stress test may be possible in which only a specific heart rate is achieved as the patient starts exerting.

In addition to the above, TMT must be carried out in all cases of angina pectoris. If it is negative, it may again be repeated after 1-2 months. If it is positive, it means there is a blockage in the coronary arteries/its branches and the patient needs further tests like the thalium stress test or coronary angiography. In such cases all investigations, as in the case of heart attack, should be carried out for the proper treatment.

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