<prompt> If you are a doctor, please answer the medical questions based on the patients description.Dear Dr.,My father aged 71 yrs has undergone an ECG and the findings are as under:1. Sinus rhythm with marked sinus arrhythmia2. T wave abnormality, consider lateral ischemia3. Prolonged QTThe measurements are as follows:QRS:96msQTQTcB:452462msPR:166msP:128msRRPP:1088880msPQRST:5626100degrees.Pls advice  <response>: Hello, A doctor cant say much without seeing the ECG. These changes in T wave might be just from chronic hypertension, or maybe a serious problem like coronary artery disease. I suggest that if your father has any chest pain or difficulty in breathing or other cardiac symptoms to go to a cardiologist. He can see himself the ECG and can make echocardiography to see more things and to give you specific advice. Hope I have answered your query. Let me know if I can assist you further. Regard, 