Reasons for inverted T waves are numerous and may include ischemia, heart attack, hyperventilation, anxiety, certain medications, infections around the heart, pulmonary embolus (blood clot in the lung), electrolyte disturbance (abnormalities in sodium, potassium levels) etc. An EKG is a tool that helps the doctor do a differential analysis by eliminating the possible causes. Further tests are warranted.
Because your chest pain can be related to ischemia (lack of blood flow) of the coronary arteries, a stress test with an echocardiogram may be relaible for an exact diagnosis. The stress test involves perfusion (dye agent injected into the blood stream) of your vessels during exercise and at rest. If there is ischemia of the larger vessels, the test will show the exact area of blockage.
Without seeing the actual ECG, an inverted T wave may indicate Left Ventricle Hypertrophy. If your left ventricle is enlarged it would more than likely be the source of your chest pain because enlarged ventricles can begin to stiffen. I am just an exercise physiologist not an MD so if I were you I would consider seeing a cardiologist to get another opinion.
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