Hello. Thank you for your question and welcome to HCM. I understand your concern.
Yes, stress almost inherently produces high heart rates (fast heart rate) due to hormonal changes that happen during it. This word of not being able to rule out the anterior
infarction, makes me think that there were elevated ST segment levels in the anterior leads in EKG. If you did not have angina and the
troponin and
creatine phospho kinase MB fraction came back negative, then this is not infarction. This may be early or accelerated
repolarization which produces and up sloping deflection of ST segment, and it is a benign phenomenon. Of course, please understand, I have to see the EKG to speak more precisely. Combining the initial words with an episode of viral infection, makes me suspect, although with a very low index, about
pericarditis (inflammation of the sac that lines the heart), and I would recommend an echocradiogram, to confirm or exclude it.
I hope I was helpful with my answer. Take care. Best regards,
Dr. Meriton