Hi I had a panic attack day before yesterday that lasted for 3 hours. I felt like foggy brain, dizziness, mild breathing difficultly, off balance feeling while walking and confusion. I went to hospital emergency room and was monitored. The doctor took ecg which says sinus tachycardia and prolonged QTc interval. I read on internet that QTC > 460 is a high risk sudden death which is freaking me out. I had ecg last month also and QTc value was 447 back then. Please advise if the attached ecg is normal with respect to QTc or the ecg machine auto interpretation is incorrect as there is no clear distinction between T and U wave in lead II V5?