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Your ECG (electrocardiography) is fine (attachment removed to protect patient identity). Technically it is a sinus rhythm with T wave inversion in III (can be seen normally), and no other significant ST abnormalities were seen. So there are no significant abnormalities in your ECG. Considering the history of semi-productive cough, it is probably a noncardiac issue and likely a respiratory problem. The usual probabilities are infection, allergies, or sometimes gastric reflux. What is the duration of the symptoms? Do you have any history of allergies? Or do these symptoms come with a change in season or other allergen exposure? Is there any history of fever or feverishness, weakness, gastric discomfort, etc.? Cardiac breathlessness sometimes may cause similar symptoms, but usually, one has a long history of a few months leg swelling, low BP, or chest pain on exertion. I hope this helps.